migraine

1. (pathology) A severe, disabling headache, usually affecting only one side of the head, and often accompanied by nausea, vomiting, photophobia and visual disturbances.Examples: "He had a headache so bad that he wished he was dead, but it was the sort of migraine that promised him he would continue to suffer but not die."; "After consuming too much coffee every day for six weeks, she got severe migraines that would last up until 47 minutes after her first cup of coffee."; "It was in 1976, during our first family holiday to Disneyland, California, that my family learned the difference between a headache and a migraine."Synonyms: hemicrania, megrim, migraine headache, sick headachecountableuncountable

2. (pathology) A neurological condition characterised by such headaches.Examples: "Syncope is estimated to occur in bouts of headache in approximately 5% of adult patients with migraine."; "Migraine is characterized by recurrent unilateral, often pulsating, headaches, worsened by physical activity and associated with nausea, photophobia and phonophobia."; "2006, Joshua W. Devine, Daily Migraine Prevention and Its Influence on Resource Utilization in the Military Health System, PhD Thesis, page 1, Migraine is a common and disabling neurological disorder with substantial variation in the frequency, severity, and duration of headaches (Goadsby, Lipton, & Ferrari, 2002)."countableuncountable