HemoChat

Evidence-Based AI Medical Search

← Back to guidelines
Neurology87 papers

Migraine aura without headache

Last edited: 4/10/2026

Overview

Migraine aura without headache, also known as silent migraine, is a neurological phenomenon characterized by transient sensory or motor disturbances that typically precede a migraine headache. However, in this variant, the headache phase is absent or minimal. The underlying pathophysiology is thought to involve cortical spreading depression 1.

Diagnosis

  • Diagnosis is primarily clinical, based on the characteristic transient neurological symptoms of aura without a significant headache 1.
  • Aura symptoms typically develop gradually over several minutes and last for 5 to 60 minutes 1.
  • Common aura symptoms include visual disturbances (e.g., scintillating scotomas, flashing lights), sensory changes (e.g., paresthesias), speech or language difficulties, and motor weakness 1.

    • Management

  • Management strategies are similar to those for migraine with aura, focusing on abortive and prophylactic treatments.
  • Abortive treatments may include triptans or ergots, although their efficacy in aura without headache may vary.
  • Prophylactic medications used for migraine with headache may also be considered for frequent or disabling episodes of aura without headache.

    • Key Recommendations

  • Cortical spreading depression is likely the event underlying the aura of migraine 1. (Evidence: Moderate)
  • A state of increased excitability of central neurons may lead to the development and propagation of cortical spreading depression 1. (Evidence: Moderate)
  • 5-Hydroxytryptamine receptors, particularly 5-HT1, are implicated in the pathogenesis of migraine 1. (Evidence: Moderate)

    • References

    1 Zagami AS. Pathophysiology of migraine and tension-type headache. Current opinion in neurology 1994. link

    Original source

    1. [1]
      Reflux-triggered migraine headache originating from the upper gum/teeth. — Spierings EL Cephalalgia : an international journal of headache (2002)
    2. [2]
      Pathophysiology of migraine and tension-type headache. — Zagami AS Current opinion in neurology (1994)
    Share:TwitterRedditLinkedIn

    HemoChat

    by SPINAI

    Evidence-based clinical decision support powered by SNOMED-CT, Neo4j GraphRAG, and NASS/AO/NICE guidelines.

    ⚕ For clinical reference only. Not a substitute for professional judgment.

    © 2026 HemoChat. All rights reserved.
    Research·Pricing·Privacy & Terms·Refund·SNOMED-CT · NASS · AO Spine · NICE · GraphRAG