Migraine with aura is a migraine subtype defined by recurrent fully reversible focal neurological symptoms, most often visual, that develop gradually and typically precede the headache phase. The disorder is centered on cortical spreading depolarization-related aura biology with downstream trigeminovascular activation, while atypical or first-ever presentations require evaluation for cerebrovascular, epileptic, or ophthalmologic mimics.
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Conditions with similar clinical presentations that must be differentiated from Migraine with aura:
name: Migraine with aura
creation_date: '2026-04-21T14:07:20Z'
category: Complex
description: >-
Migraine with aura is a migraine subtype defined by recurrent fully
reversible focal neurological symptoms, most often visual, that develop
gradually and typically precede the headache phase. The disorder is centered
on cortical spreading depolarization-related aura biology with downstream
trigeminovascular activation, while atypical or first-ever presentations
require evaluation for cerebrovascular, epileptic, or ophthalmologic mimics.
parents:
- Migraine
synonyms:
- MA
- classical migraine
- migraine aura
disease_term:
preferred_term: migraine with aura
term:
id: MONDO:0005475
label: migraine with aura
notes: >-
This entry focuses on the episodic migraine-with-aura phenotype rather than
hemiplegic migraine or broad migraine disorder biology. Visual aura is the
dominant presentation, but sensory and language aura components are retained
because they materially affect diagnosis and differential diagnosis.
prevalence:
- population: General population
measure_type: LIFETIME_PREVALENCE
prevalence_class: ABOVE_1_IN_1000
rate_per_100000: 5000.0
notes: Lifetime prevalence was 5% in a population-based interview study.
evidence:
- reference: PMID:1525797
reference_title: "Migraine with aura and migraine without aura: an epidemiological study."
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: Lifetime prevalence of MA was 5%, male:female ratio 1:2.
explanation: Supports a population-level lifetime prevalence estimate for migraine with aura.
pathophysiology:
- name: Cortical spreading depolarization
biological_scale: TISSUE
description: >-
Migraine aura is driven by cortical spreading depolarization, a propagating
wave of neuronal and glial depolarization that generates transient focal
neurological symptoms and provides the major mechanistic substrate for aura.
cell_types:
- preferred_term: neuron
term:
id: CL:0000540
label: neuron
biological_processes:
- preferred_term: chemical synaptic transmission
term:
id: GO:0007268
label: chemical synaptic transmission
modifier: DYSREGULATED
locations:
- preferred_term: brain
term:
id: UBERON:0000955
label: brain
evidence:
- reference: PMID:34384631
reference_title: Migraine with aura.
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: >-
The pivotal role of cortical spreading depression (CSD) as a mechanism
underlying aura has been widely supported by a large body of studies.
explanation: Supports cortical spreading depolarization as the central mechanism underlying aura symptoms.
- reference: PMID:40498799
reference_title: The mysterious link between migraine aura and migraine headache.
supports: SUPPORT
evidence_source: MODEL_ORGANISM
snippet: >-
Cortical spreading depolarization (SD), recognized as the mechanism
underlying aura symptoms, has been shown to trigger head pain through
activation of trigeminal nociceptors in animal models.
explanation: Confirms that cortical spreading depolarization explains aura and mechanistically links aura biology to later pain signaling.
downstream:
- target: Sequential reversible aura symptoms
description: >-
Propagating cortical dysfunction produces the gradual, fully reversible
visual, sensory, and language symptoms that define aura.
- target: Trigeminovascular nociceptor activation
description: >-
Cortical spreading depolarization can recruit pain-generating trigeminal
pathways that contribute to the headache phase.
- name: Sequential reversible aura symptoms
biological_scale: ORGANISM
description: >-
Aura symptoms typically evolve over minutes, often beginning visually and
progressing to sensory or aphasic symptoms, with complete reversibility and
symptom duration usually under one hour.
evidence:
- reference: PMID:34384631
reference_title: Migraine with aura.
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: >-
Aura is characterized by gradual development, duration of each symptom no
longer than one hour, a mix of positive and negative features, and
complete reversibility.
explanation: Supports the defining temporal and phenomenologic structure of migraine aura.
- reference: PMID:34384631
reference_title: Migraine with aura.
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: >-
When aura symptoms are multiple, they usually follow one another in
succession, beginning with visual, then sensory, then aphasic
explanation: Supports the characteristic sequential progression across multiple aura modalities.
downstream:
- target: Scintillating scotoma and other visual aura
description: >-
Aura typically begins with visual symptoms such as scintillating scotoma.
- target: Sensory aura
description: >-
Sensory symptoms commonly follow the visual phase when aura is multimodal.
- target: Aphasic aura
description: >-
Language disturbance may follow the visual and sensory phases in the aura
sequence.
notes: >-
The stereotyped gradual and reversible symptom pattern is the main clinical
discriminator from stroke and epilepsy (elaborated in the
differential-diagnosis entries).
- name: Trigeminovascular nociceptor activation
biological_scale: CELLULAR
description: >-
Aura-associated cortical spreading depolarization can activate trigeminal
nociceptors and connect the aura phase to head pain generation.
biological_processes:
- preferred_term: response to pain
term:
id: GO:0048265
label: response to pain
modifier: INCREASED
evidence:
- reference: PMID:40498799
reference_title: The mysterious link between migraine aura and migraine headache.
supports: SUPPORT
evidence_source: MODEL_ORGANISM
snippet: >-
Cortical spreading depolarization (SD), recognized as the mechanism
underlying aura symptoms, has been shown to trigger head pain through
activation of trigeminal nociceptors in animal models.
explanation: Supports trigeminal nociceptor recruitment as the main downstream pain-linking mechanism after aura initiation.
downstream:
- target: Headache phase
description: >-
Trigeminovascular activation contributes to the typical migrainous
headache that follows aura in many attacks.
- name: Retinal microvascular perfusion abnormality
biological_scale: TISSUE
description: >-
Migraine with aura shows retinal microvascular perfusion changes on optical
coherence tomography angiography, supporting a vascular biomarker axis that
may track aura-specific biology and ischemic susceptibility.
locations:
- preferred_term: eye
term:
id: UBERON:0000970
label: eye
evidence:
- reference: PMID:29059314
reference_title: Foveal and Peripapillary Vascular Decrement in Migraine With Aura Demonstrated by Optical Coherence Tomography Angiography.
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: >-
Migraine with, but not without, aura was associated with foveal and
peripapillary vascular decrements
explanation: Supports an aura-specific retinal vascular signature detectable outside the headache history alone.
- reference: PMID:38031892
reference_title: Reduction in retinal microvascular perfusion during migraine attacks.
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: >-
During migraine attacks there was a significant reduction in the
parafoveal region VFI in MA
explanation: Adds ictal retinal hypoperfusion evidence and supports OCTA biomarkers in migraine with aura.
- name: K2P potassium channel (TRESK/TREK1/TREK2) dysfunction
biological_scale: MOLECULAR
description: >-
Reduced two-pore-domain (K2P) potassium channel activity links the KCNK18
(TRESK) migraine-with-aura mutation to sensory-neuron hyperexcitability.
The disease-relevant effect of the F139WfsX24 frameshift is downregulation
of the related TREK1/TREK2 channels, increasing the excitability of
trigeminal and dorsal root ganglion sensory neurons rather than acting on
cortex directly.
cell_types:
- preferred_term: neuron
term:
id: CL:0000540
label: neuron
biological_processes:
- preferred_term: potassium ion transmembrane transport
term:
id: GO:0071805
label: potassium ion transmembrane transport
modifier: DECREASED
evidence:
- reference: PMID:31226929
reference_title: Advances in genetics of migraine.
supports: SUPPORT
evidence_source: IN_VITRO
snippet: >-
resulting in hyperexcitability of trigeminal ganglion
neurons
explanation: >-
Localizes the K2P/TRESK channel defect to trigeminal sensory-neuron
hyperexcitability, the proximal molecular perturbation for the KCNK18
genetic form.
- reference: PMID:31226929
reference_title: Advances in genetics of migraine.
supports: SUPPORT
evidence_source: IN_VITRO
snippet: >-
F139Wfsx24 inhibits activity of all three channels
explanation: >-
Anchors the multi-channel scope of the defect: the migraine-associated
F139WfsX24 product inhibits TRESK plus TREK1/TREK2, whereas the
non-migraine C110R variant inhibits only TRESK.
downstream:
- target: Trigeminovascular nociceptor activation
description: >-
Heightened trigeminal sensory-neuron excitability from K2P channel
dysfunction lowers the threshold for trigeminovascular nociceptor
activation.
- name: Hyperhomocysteinemia
biological_scale: ORGANISM
description: >-
The MTHFR C677T (677T) allele lowers enzyme activity and mildly raises
plasma total homocysteine, producing the mild hyperhomocysteinemia that
provides a vascular route to migraine-with-aura susceptibility.
evidence:
- reference: PMID:35125689
reference_title: Relation Between Methylenetetrahydrofolate Reductase Polymorphisms (C677T and A1298C) and Migraine Susceptibility.
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: >-
The 677T allele is associated with reduced enzyme activity, and mildly
increased plasma total homocysteine (tHcy) concentrations
explanation: Grounds the MTHFR C677T to elevated-homocysteine step.
downstream:
- target: Endothelial dysfunction
description: >-
Elevated homocysteine is toxic to the vascular endothelium and produces
endothelial cell injury.
- name: Endothelial dysfunction
biological_scale: CELLULAR
description: >-
Hyperhomocysteinemia injures the vascular endothelium; the resulting
endothelial dysfunction provides the route that can activate the
trigeminovascular system and underlies the microvascular and ischemic
susceptibility of migraine with aura.
cell_types:
- preferred_term: endothelial cell
term:
id: CL:0000115
label: endothelial cell
evidence:
- reference: PMID:35125689
reference_title: Relation Between Methylenetetrahydrofolate Reductase Polymorphisms (C677T and A1298C) and Migraine Susceptibility.
supports: SUPPORT
evidence_source: OTHER
snippet: >-
Hyperhomocysteinemia produce endothelial cell injury, which may activate
trigeminovascular system (TVS), resulting in an inflammatory action in
the meninges and dilation of the large cerebral vessels.
explanation: >-
Provides the proposed endothelial-injury route from hyperhomocysteinemia
to trigeminovascular activation (a proposed mechanism, hence PARTIAL).
downstream:
- target: Trigeminovascular nociceptor activation
description: >-
Homocysteine-induced endothelial injury can activate the
trigeminovascular system.
- target: Retinal microvascular perfusion abnormality
description: >-
Endothelial dysfunction is a plausible shared substrate for the retinal
microvascular perfusion changes observed in migraine with aura.
phenotypes:
- name: Migraine with aura
category: Neurological
frequency: OBLIGATE
diagnostic: true
notes: Recurrent fully reversible focal neurological symptoms preceding or accompanying migraine headache.
phenotype_term:
preferred_term: Migraine with aura
term:
id: HP:0002077
label: Migraine with aura
evidence:
- reference: PMID:34384631
reference_title: Migraine with aura.
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: >-
Aura is a fully reversible focal neurological phenomenon involving
visual, sensory, speech, and/or motor symptoms that develops gradually
and usually precedes the headache phase.
explanation: Directly supports the defining migraine-with-aura phenotype.
- name: Headache phase
category: Neurological
frequency: VERY_FREQUENT
diagnostic: true
notes: Aura usually precedes the headache phase rather than replacing it.
phenotype_term:
preferred_term: Headache
term:
id: HP:0002315
label: Headache
evidence:
- reference: PMID:34384631
reference_title: Migraine with aura.
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: >-
Aura is a fully reversible focal neurological phenomenon involving
visual, sensory, speech, and/or motor symptoms that develops gradually
and usually precedes the headache phase.
explanation: Supports the canonical sequencing in which aura is followed by a headache phase.
- name: Scintillating scotoma and other visual aura
category: Neurological
frequency: VERY_FREQUENT
diagnostic: true
notes: Visual aura occurs in more than 90% of affected patients.
phenotype_term:
preferred_term: Scintillating scotoma
term:
id: HP:0010822
label: Scintillating scotoma
evidence:
- reference: PMID:1525797
reference_title: "Migraine with aura and migraine without aura: an epidemiological study."
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: Visual disturbances were the most common aura phenomenon occurring in 90% of subjects with MA.
explanation: Supports visual aura as the dominant aura manifestation in migraine with aura.
- reference: PMID:34384631
reference_title: Migraine with aura.
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: Visual aura is the most common type of aura, occurring in over 90% of patients.
explanation: Independently confirms the predominance of visual aura.
- name: Sensory aura
category: Neurological
frequency: FREQUENT
notes: Sensory symptoms commonly follow visual aura when multiple aura symptoms occur.
phenotype_term:
preferred_term: Paresthesia
term:
id: HP:0003401
label: Paresthesia
evidence:
- reference: PMID:34384631
reference_title: Migraine with aura.
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: >-
When aura symptoms are multiple, they usually follow one another in
succession, beginning with visual, then sensory, then aphasic
explanation: Supports sensory aura as a common nonvisual aura component in multisymptom attacks.
- name: Aphasic aura
category: Neurological
frequency: OCCASIONAL
notes: Language disturbance is less common than visual aura and often follows visual and sensory symptoms.
phenotype_term:
preferred_term: Aphasia
term:
id: HP:0002381
label: Aphasia
evidence:
- reference: PMID:34384631
reference_title: Migraine with aura.
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: >-
When aura symptoms are multiple, they usually follow one another in
succession, beginning with visual, then sensory, then aphasic
explanation: Supports aphasic aura as part of the classic sequential aura pattern.
- name: Ischemic stroke
category: Vascular
notes: >-
Migraine with aura carries an elevated ischemic stroke risk, particularly
in women using estrogen-containing hormonal contraception.
phenotype_term:
preferred_term: Ischemic stroke
term:
id: HP:0002140
label: Ischemic stroke
evidence:
- reference: PMID:34384631
reference_title: Migraine with aura.
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: >-
The relative risk of ischemic stroke is significantly increased in
migraine with aura. Combined hormonal contraception with estrogens
significantly increases the risk of stroke in women with migraine with
aura.
explanation: Supports ischemic stroke as an evidence-backed vascular complication risk in migraine with aura.
inheritance:
- name: Polygenic inheritance in common migraine with aura
inheritance_term:
preferred_term: Polygenic inheritance
term:
id: HP:0010982
label: Polygenic inheritance
description: >-
Common (non-hemiplegic) migraine with aura has a strong but complex
genetic component. Its heritability is driven mainly by many common genetic
variants identified through genome-wide association studies, in contrast to
the rare syndromic hemiplegic-migraine forms (CACNA1A/ATP1A2/SCN1A), which
are outside the scope of this entry. Rare monogenic contributions to
typical (non-hemiplegic) migraine with aura, such as KCNK18/TRESK, are in
scope and captured below.
evidence:
- reference: PMID:31226929
reference_title: Advances in genetics of migraine.
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: >-
With respect to common migraine forms, large genome-wide association
studies (GWAS) have greatly expanded our knowledge of the genes
involved, emphasizing the role of both neuronal and vascular pathways.
explanation: Supports a polygenic genetic architecture for common migraine, including migraine with aura, driven by GWAS-identified common variants.
genetic:
- name: KCNK18
gene_term:
preferred_term: KCNK18
term:
id: hgnc:19439
label: KCNK18
association: Causative
relationship_type: CAUSATIVE
notes: >-
KCNK18 encodes TRESK, a two-pore-domain (K2P) potassium channel. A
frameshift mutation (F139WfsX24) segregates with typical migraine with
aura in a large pedigree. The originally proposed simple dominant-negative
loss of TRESK function has since been revised: the frameshift creates an
in-frame alternative start codon whose product downregulates the related
TREK1/TREK2 channels, raising the excitability of trigeminal and dorsal
root ganglion sensory neurons — which explains why another dominant-negative
TRESK variant (C110R) is not migraine-associated.
evidence:
- reference: PMID:20871611
reference_title: A dominant-negative mutation in the TRESK potassium channel is linked to familial migraine with aura.
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: >-
Here we report a frameshift mutation, F139WfsX24, which segregates
perfectly with typical migraine with aura in a large pedigree.
explanation: Directly supports KCNK18/TRESK as a causative gene in familial typical migraine with aura.
- reference: PMID:20871611
reference_title: A dominant-negative mutation in the TRESK potassium channel is linked to familial migraine with aura.
supports: SUPPORT
evidence_source: IN_VITRO
snippet: >-
Functional characterization of this mutation demonstrates that it causes
a complete loss of TRESK function and that the mutant subunit suppresses
wild-type channel function through a dominant-negative effect
explanation: >-
Characterizes the originally proposed dominant-negative effect on TRESK
currents; later work (PMID:31226929) revised the disease-relevant effect
to TREK1/TREK2 downregulation.
- reference: PMID:31226929
reference_title: Advances in genetics of migraine.
supports: SUPPORT
evidence_source: MODEL_ORGANISM
snippet: >-
It is this that specifically downregulates TREK1 and TREK2 function,
which appears to contribute to migraine induction.
explanation: >-
Revises the original dominant-negative-on-TRESK model: the F139WfsX24
frameshift creates an in-frame alternative start codon whose product
downregulates TREK1/TREK2, explaining why the other dominant-negative
TRESK variant (C110R) is not migraine-associated.
- name: MTHFR
gene_term:
preferred_term: MTHFR
term:
id: hgnc:7436
label: MTHFR
association: Susceptibility
relationship_type: SUSCEPTIBILITY
notes: >-
The MTHFR C677T (rs1801133) polymorphism, which elevates homocysteine, is
associated with migraine with aura specifically rather than migraine
without aura in meta-analysis, consistent with a vascular/endothelial
contribution to aura susceptibility.
evidence:
- reference: PMID:35125689
reference_title: Relation Between Methylenetetrahydrofolate Reductase Polymorphisms (C677T and A1298C) and Migraine Susceptibility.
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: >-
Results of present meta-analysis indicate overall association between
MTHFR C677T polymorphism with migraine in total 24 studies, in Asian
population and in MA cases but did not show any association with
Caucasian population and MO cases.
explanation: Supports MTHFR C677T as a migraine-with-aura-specific (not migraine-without-aura) susceptibility variant.
treatments:
- name: NSAIDs or aspirin during aura
description: >-
Early anti-inflammatory treatment during the aura phase is used to blunt or
reduce the subsequent headache phase rather than to abort aura itself.
treatment_term:
preferred_term: Pharmacotherapy
term:
id: NCIT:C15986
label: Pharmacotherapy
evidence:
- reference: PMID:34384631
reference_title: Migraine with aura.
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: >-
It is recommended to start non-steroidal anti-inflammatory drugs
(NSAIDs) or aspirin as soon as possible during the aura phase, not to
treat the aura, but to avoid or to diminish the headache phase.
explanation: Supports early NSAID or aspirin use specifically during the aura phase to mitigate later headache.
- name: Triptan at headache onset
description: >-
Triptans are recommended after aura when headache begins, especially if
early anti-inflammatory therapy is insufficient.
treatment_term:
preferred_term: Pharmacotherapy
term:
id: NCIT:C15986
label: Pharmacotherapy
evidence:
- reference: PMID:34384631
reference_title: Migraine with aura.
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: In case of failure of NSAIDs or aspirin it is recommended to use a triptan when the headache begins.
explanation: Supports a timing-specific acute treatment strategy for attacks that include aura.
- name: Topiramate prophylaxis
description: >-
Topiramate is used as preventive therapy in migraine with aura and has
comparable short-term efficacy to propranolol in randomized clinical study.
treatment_term:
preferred_term: Pharmacotherapy
term:
id: NCIT:C15986
label: Pharmacotherapy
evidence:
- reference: PMID:38011452
reference_title: A comparative study on the effectiveness of topiramate and propranolol in patients with migraine with aura.
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: >-
There was no significant difference in the efficacy of topiramate and
propranolol in patients with migraine with aura.
explanation: Supports topiramate as an evidence-backed preventive option in migraine with aura.
- name: Propranolol prophylaxis
description: >-
Propranolol remains a preventive option for migraine with aura with similar
trial-level efficacy to topiramate in direct comparison.
treatment_term:
preferred_term: Pharmacotherapy
term:
id: NCIT:C15986
label: Pharmacotherapy
evidence:
- reference: PMID:38011452
reference_title: A comparative study on the effectiveness of topiramate and propranolol in patients with migraine with aura.
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: >-
There was no significant difference in the efficacy of topiramate and
propranolol in patients with migraine with aura.
explanation: Supports propranolol as a migraine-with-aura-specific preventive therapy option.
- name: CGRP-pathway monoclonal antibody prophylaxis
description: >-
Monoclonal antibodies targeting the CGRP pathway are effective preventive
therapies for migraine, including migraine with aura.
treatment_term:
preferred_term: Pharmacotherapy
term:
id: NCIT:C15986
label: Pharmacotherapy
therapeutic_agent:
- preferred_term: Monoclonal Antibody
term:
id: NCIT:C20401
label: Monoclonal Antibody
evidence:
- reference: DOI:10.1186/s10194-024-01827-x
reference_title: Unraveling the interplay of neuroinflammatory signaling between parenchymal and meningeal cells in migraine headache
supports: SUPPORT
evidence_source: OTHER
snippet: >-
The efficacy of relatively blood-brain barrier-impermeable
anti-calcitonin gene-related peptide antibodies and triptans in treating
migraine attacks, both with and without aura, supports the concept of
migraine pain originating in meninges.
explanation: Supports CGRP-pathway inhibition as an evidence-backed preventive treatment option in migraine with aura.
diagnosis:
- name: Clinical diagnosis using ICHD criteria
description: >-
Migraine with aura is primarily diagnosed clinically using International
Classification of Headache Disorders criteria focused on gradual symptom
spread, mixed positive and negative features, symptom duration under one
hour, and complete reversibility.
results: >-
A history of stereotyped, fully reversible aura symptoms with gradual
evolution strongly supports migraine with aura.
diagnosis_term:
preferred_term: clinical assessment
term:
id: NCIT:C124351
label: Clinical Evaluation
evidence:
- reference: PMID:34384631
reference_title: Migraine with aura.
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: >-
The diagnosis is based on the International Headache Classification
Disorders III edition criteria.
explanation: Supports formal ICHD-based clinical diagnosis.
- reference: PMID:34384631
reference_title: Migraine with aura.
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: >-
Aura is characterized by gradual development, duration of each symptom no
longer than one hour, a mix of positive and negative features, and
complete reversibility.
explanation: Provides the key clinical criteria used to recognize true aura.
- name: Directed history of aura evolution and laterality
description: >-
Focused history-taking on monocular versus binocular symptoms, sudden
versus gradual onset, and isolated versus recurrent events helps separate
migraine aura from retinal, epileptic, and vascular mimics.
results: >-
Gradual binocular recurrent symptoms favor migraine aura, whereas sudden,
strictly monocular, or single-event symptoms raise concern for alternate
diagnoses.
diagnosis_term:
preferred_term: clinical assessment
term:
id: NCIT:C124351
label: Clinical Evaluation
evidence:
- reference: PMID:34636719
reference_title: Visual Phenomena Associated With Migraine and Their Differential Diagnosis.
supports: SUPPORT
evidence_source: OTHER
snippet: >-
The most helpful questions for differential diagnosis are whether the
symptoms are present in one eye only or in both, whether their onset was
sudden or over minutes or days, and whether the phenomenon has occurred
only once or repeatedly, or is persistently present.
explanation: Supports directed phenomenologic history as a core diagnostic procedure for visual aura presentations.
- name: Brain MRI or urgent neurovascular evaluation for atypical aura
description: >-
Neuroimaging and ancillary stroke evaluation are indicated when the aura
pattern is first-ever, nonvisual, simultaneous rather than spreading,
prolonged, late-onset, or otherwise suggestive of focal ischemia.
results: >-
Ancillary investigation is used to exclude stroke or transient ischemic
attack when aura-like symptoms are atypical for migraine with aura.
diagnosis_term:
preferred_term: magnetic resonance imaging procedure
term:
id: NCIT:C16809
label: Magnetic Resonance Imaging
evidence:
- reference: PMID:34384631
reference_title: Migraine with aura.
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: >-
If the patient has no visual aura symptoms or simultaneous neurological
symptoms, or presents neurological symptoms corresponding to a cerebral
vascular territory, emergency exploration of a possible transient
ischemic attack is necessary.
explanation: Supports urgent vascular workup for atypical aura-like presentations.
- reference: PMID:36203991
reference_title: Migraine aura-like symptoms at onset of stroke and stroke-like symptoms in migraine with aura.
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: >-
clarifying the differential diagnosis in an individual patient requires
additional history elements, physical findings, or results of ancillary
investigations.
explanation: Supports use of ancillary investigations because stroke and migraine with aura can overlap symptomatically.
differential_diagnoses:
- name: Transient ischemic attack
description: >-
Transient ischemic attack is a major mimic of first or atypical aura,
particularly when symptoms are abrupt, correspond to a vascular territory,
or lack the usual gradual visual onset.
disease_term:
preferred_term: transient ischemic attack
term:
id: MONDO:0005264
label: transient ischemic attack
distinguishing_features:
- Migraine aura usually evolves gradually with sequential positive and negative symptoms and complete reversibility
- Suspected TIA is favored by abrupt onset, nonvisual focal deficits, or symptoms mapping to a vascular territory
evidence:
- reference: PMID:34384631
reference_title: Migraine with aura.
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: >-
If the patient has no visual aura symptoms or simultaneous neurological
symptoms, or presents neurological symptoms corresponding to a cerebral
vascular territory, emergency exploration of a possible transient
ischemic attack is necessary.
explanation: Directly supports TIA as a key diagnostic mimic requiring urgent exclusion.
- name: Ischemic stroke
description: >-
Ischemic stroke can present with aura-like symptoms at onset, and migraine
with aura can also produce stroke-like negative symptoms, making clinical
separation difficult in individual cases.
distinguishing_features:
- Stroke more often causes sudden negative deficits and may require imaging confirmation
- Migraine with aura more often shows visual onset, symptom succession, and complete reversibility
evidence:
- reference: PMID:36203991
reference_title: Migraine aura-like symptoms at onset of stroke and stroke-like symptoms in migraine with aura.
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: >-
Many patients with stroke experience migraine-like symptoms at stroke
onset, and many migraine with aura patients have stroke-like symptoms.
explanation: Supports ischemic stroke as a high-stakes differential diagnosis for aura-like events.
- name: Isolated epileptic aura
description: >-
Visual or sensory epileptic aura can mimic migraine aura, especially when
symptoms are brief, stereotyped, and not followed by typical migraine
headache evolution.
distinguishing_features:
- Migraine aura generally spreads over minutes, while epileptic aura is usually more abrupt and shorter
- Recurrent stereotyped attacks without the usual migraine sequence or headache increase concern for epilepsy
evidence:
- reference: PMID:34636719
reference_title: Visual Phenomena Associated With Migraine and Their Differential Diagnosis.
supports: SUPPORT
evidence_source: OTHER
snippet: >-
A visual aura associated with migraine must be distinguished, in rare
cases, from an isolated epileptic aura
explanation: Supports isolated epileptic aura as a recognized migraine-aura mimic.
- name: Visual snow syndrome
description: >-
Persistent continuous visual disturbance differs from episodic migraine
aura, but patients may initially describe both as visual phenomena.
disease_term:
preferred_term: visual snow syndrome
term:
id: MONDO:0018486
label: visual snow syndrome
distinguishing_features:
- Visual snow is persistently present rather than a gradually evolving short-lived aura
- Migraine aura is episodic and fully reversible
evidence:
- reference: PMID:34636719
reference_title: Visual Phenomena Associated With Migraine and Their Differential Diagnosis.
supports: SUPPORT
evidence_source: OTHER
snippet: >-
A visual aura associated with migraine must be distinguished, in rare
cases, from an isolated epileptic aura, from cerebral/retinal ischemia,
or from visual snow.
explanation: Supports visual snow syndrome as a specific differential diagnosis of persistent visual phenomena.
- name: Posterior reversible encephalopathy syndrome
description: >-
PRES can present with visual symptoms that resemble aura early in its
course but usually declares itself through additional neurologic findings
and imaging abnormalities.
distinguishing_features:
- PRES typically progresses beyond isolated recurrent aura phenomenology
- Neuroimaging and the broader clinical course distinguish PRES from migraine aura
evidence:
- reference: PMID:34636719
reference_title: Visual Phenomena Associated With Migraine and Their Differential Diagnosis.
supports: SUPPORT
evidence_source: OTHER
snippet: >-
Posterior reversible encephalopathy syndrome (PRES) is rare and
generally reveals itself over its further course through the appearance
of additional clinical manifestations.
explanation: Supports PRES as an uncommon but clinically important visual-aura mimic.
- name: CADASIL
description: >-
CADASIL (NOTCH3-related hereditary cerebral small-vessel disease) is an
important secondary cause of migraine with aura; MA is often the earliest
manifestation and can be atypical or prolonged, so recurrent MA in the
setting of subcortical infarcts, cognitive decline, or characteristic
white-matter changes should prompt consideration of CADASIL. The strength
and directionality of the MA-CADASIL link is debated (the cited review
argues the "pros"; a companion point-counterpoint argues the "cons", and
some NOTCH3 variant carriers largely lack MA), but the strong clinical
enrichment makes CADASIL a differential worth excluding.
disease_term:
preferred_term: CADASIL
term:
id: MONDO:0000914
label: cerebral arteriopathy, autosomal dominant, with subcortical infarcts and leukoencephalopathy, type 1
distinguishing_features:
- Primary migraine with aura lacks early subcortical infarcts, progressive cognitive decline, and a NOTCH3 mutation
- CADASIL-associated aura is markedly enriched, frequently atypical or prolonged, and accompanied by anterior-temporal and external-capsule white-matter lesions on MRI
evidence:
- reference: PMID:40169951
reference_title: Is migraine a common manifestation of CADASIL? Arguments Pros.
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: >-
Migraine with aura (MA) is a hallmark feature of CADASIL, a hereditary
small-vessel disease caused by NOTCH3 mutations.
explanation: Supports CADASIL as a hereditary secondary cause and mimic of migraine with aura.
- reference: PMID:40169951
reference_title: Is migraine a common manifestation of CADASIL? Arguments Pros.
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: >-
MA was 10-20 times more prevalent in patients with CADASIL than in the
general population, with frequent atypical and prolonged auras.
explanation: Quantifies the strong MA enrichment and atypical/prolonged features that distinguish CADASIL-related aura from primary migraine with aura.
clinical_trials:
- name: NCT04063540
phase: PHASE_II
status: RECRUITING
description: >-
Randomized crossover proof-of-concept study of amiloride prophylaxis for
migraine with aura, motivated by acid-sensing ion channel blockade of
cortical spreading depolarization in translational models.
target_phenotypes:
- preferred_term: Migraine with aura
term:
id: HP:0002077
label: Migraine with aura
- preferred_term: Headache
term:
id: HP:0002315
label: Headache
evidence:
- reference: clinicaltrials:NCT04063540
reference_title: "Acid-Sensing Ion Channel and Migraine Disease Proof of Concept Study on the Efficacy of Amiloride in the Prophylaxis of Migraine Aura"
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: >-
The APAM study is a proof-of-concept study that aims to evaluate the
effect of amiloride in the prophylaxis of migraine with aura.
explanation: Supports an aura-directed interventional trial targeting cortical spreading depolarization biology.
- name: NCT02253004
phase: NOT_APPLICABLE
status: COMPLETED
description: >-
Double-blind placebo-controlled crossover study testing cilostazol as an
aura induction and endothelial-response probe in patients with migraine
with aura.
target_phenotypes:
- preferred_term: Migraine with aura
term:
id: HP:0002077
label: Migraine with aura
notes: ClinicalTrials.gov labels this as a mechanistic crossover induction study rather than a conventional phased efficacy program.
evidence:
- reference: clinicaltrials:NCT02253004
reference_title: "The Effect of the Selective PDE3 Inhibitor on Migraine With Aura Induction and Vascular Endothelial Function."
supports: SUPPORT
evidence_source: HUMAN_CLINICAL
snippet: >-
In a double blind placebo-controlled cross-over study the effect of
cilostazol on aura induction and endothelial response is tested in
patient with migraine with aura.
explanation: Supports an experimental clinical trial focused on aura induction and vascular response biology.
classifications:
harrisons_chapter:
- classification_value: NEUROLOGIC
datasets:
- accession: geo:GSE67933
title: RNA profiling by deepSAGE sequencing in the cortex of a migraine mouse model after induction of cortical spreading depression
description: >-
Bulk transcriptomic dataset from mouse cortex after experimentally induced
cortical spreading depression, providing a direct molecular resource for
aura-relevant brain-state changes.
organism:
preferred_term: mouse
term:
id: NCBITaxon:10090
label: Mus musculus
data_type: BULK_RNA_SEQ
sample_types:
- preferred_term: brain cortex
term:
id: UBERON:0000955
label: brain
tissue_term:
preferred_term: brain
term:
id: UBERON:0000955
label: brain
sample_count: 24
conditions:
- cortical spreading depression migraine model
- control cortex
notes: GEO summary describes deepSAGE cortex profiling after induced cortical spreading depression in a migraine model.
- accession: geo:GSE145102
title: Astrocyte deletion of alpha2-Na/K ATPase triggers episodic motor paralysis in mice via a metabolic pathway
description: >-
Mouse transcriptomic resource from an ATP1A2-related aura-relevant model
capturing brain metabolic and glial perturbation linked to migraine aura
susceptibility.
organism:
preferred_term: mouse
term:
id: NCBITaxon:10090
label: Mus musculus
data_type: BULK_RNA_SEQ
sample_types:
- preferred_term: brain tissue
term:
id: UBERON:0000955
label: brain
tissue_term:
preferred_term: brain
term:
id: UBERON:0000955
label: brain
sample_count: 28
conditions:
- ATP1A2-related migraine aura model
- control brain tissue
notes: GEO summary indicates a mouse aura-related Na/K ATPase model with transcriptomic profiling relevant to glial and metabolic mechanisms.
references:
- reference: PMID:1525797
title: "Migraine with aura and migraine without aura: an epidemiological study."
findings: []
- reference: PMID:29059314
title: Foveal and Peripapillary Vascular Decrement in Migraine With Aura Demonstrated by Optical Coherence Tomography Angiography.
findings: []
- reference: PMID:34384631
title: Migraine with aura.
findings: []
- reference: PMID:34636719
title: Visual Phenomena Associated With Migraine and Their Differential Diagnosis.
findings: []
- reference: PMID:36203991
title: Migraine aura-like symptoms at onset of stroke and stroke-like symptoms in migraine with aura.
findings: []
- reference: PMID:38011452
title: A comparative study on the effectiveness of topiramate and propranolol in patients with migraine with aura.
findings: []
- reference: PMID:38031892
title: Reduction in retinal microvascular perfusion during migraine attacks.
findings: []
- reference: PMID:20871611
title: A dominant-negative mutation in the TRESK potassium channel is linked to familial migraine with aura.
findings: []
- reference: PMID:31226929
title: Advances in genetics of migraine.
findings: []
- reference: PMID:35125689
title: Relation Between Methylenetetrahydrofolate Reductase Polymorphisms (C677T and A1298C) and Migraine Susceptibility.
findings: []
- reference: PMID:40169951
title: Is migraine a common manifestation of CADASIL? Arguments Pros.
findings: []
- reference: PMID:40498799
title: The mysterious link between migraine aura and migraine headache.
findings: []
- reference: DOI:10.1186/s10194-024-01827-x
title: Unraveling the interplay of neuroinflammatory signaling between parenchymal and meningeal cells in migraine headache
findings: []
- reference: clinicaltrials:NCT02253004
title: The Effect of the Selective PDE3 Inhibitor on Migraine With Aura Induction and Vascular Endothelial Function.
findings: []
- reference: clinicaltrials:NCT04063540
title: Acid-Sensing Ion Channel and Migraine Disease Proof of Concept Study on the Efficacy of Amiloride in the Prophylaxis of Migraine Aura
findings: []
This report is retrieval-only and is generated directly from Asta results.
search_papers_by_relevance with snippet_search.