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Same as Megrim.

Same as Megrim.

A subtype of vascular headaches characterized by periodic unilateral pulsatile headaches which begin in childhood, adolescence, or early adult life and recur with diminishing frequency during advancing years. The two major subtypes are CLASSIC MIGRAINE (i.e., migraine with aura) and COMMON MIGRAINE (i.e., migraine without aura). Migrainous episodes may be associated with alterations in cerebral blood flow. (From Adams et al., Principles of Neurology, 6th ed, p172)

Unilateral pain of the head.

Periodic sick headache, often one-sided.

Syn.: megrim, sick headache. Periodic headache, often limited to one side of the head and accompanied by nausea, vomiting, and various sensory manifestations.