Severe Headache Migraine

American Heritage Dictionary - Cite This Source - Share This mi·graine  

(mī'grān')  Pronunciation Key  n.   A severe recurring headache, usually affecting only one side of the head, characterized by sharp pain and often accompanied by nausea, vomiting, and visual disturbances. Also called megrim. [Middle English, from Old French, from Late Latin hēmicrānia, from Greek hēmikrāniā : hēmi-, hemi- + krānion, head; see ker-1 in Indo-European roots.] Botox might be good at getting out of migraine. Interesting.