What counts as a migraine aura, and how long does it last? · Grey Matter

A migraine aura is a fully reversible neurological symptom (visual, sensory, speech or, rarely, motor) that develops gradually and is followed by or comes with the headache.

What counts as a migraine aura, and how long does it last?

A migraine aura is a fully reversible neurological symptom (visual, sensory, speech or, rarely, motor) that develops gradually and is followed by or comes with the headache. By the international classification, at least one symptom spreads gradually over five minutes or more, each symptom lasts five to sixty minutes, at least one is on one side, and several may follow one another. More than 90 % of auras are visual, typically a flickering zigzag or bright arc that expands and leaves a blind patch, and an aura can also occur without any headache after it.