Familial hemiplegic Migraine
May 21st, 2008 . by editor
FHM or Familial hemiplegic Migraine is a type of migraine with a possible polygenetic component which attacks may last from 4 to 72 hours and is apparently caused by ion channel mutations. Migraine sufferers who experience this kind of syndrome have moderately typical migraine headaches preceded or accompanied by reversible limb weakness on one side and also visual, sensory or speech difficulties. It is often difficult though to make a diagnosis between basilar-type migraine and hemiplegic migraine. Basilar-type migraine though can present with tingling or numbness while true motor weakness and paralysis occur only in hemiplegic migraine, which makes that as their differential diagnosis.
