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Up to 90% of the general population reported experiencing headaches at some point in their lives. At any given point in time, up to 10% of the general population seeks medical treatment for the relief of disabling headaches, and over 40% of North Americans have experienced severe headaches at some point in their lives. Headache is a complex phenomenon, the pathophysiology of which is not completely tension headache understood.
Migraine sometimes has dramatic features of transient neurologic deficits, blinding headaches, nausea, and vomiting. Migraine is much more common in women than men, runs in families, and is usually a disorder of young, primarily healthy women. Out of the several categories of migraine headaches, two are particularly worth mentioning. Migraine with aura and without aura. Migraine without aura is far more "common" than migraine with Aura are usually visual, but may involve other senses or occasionally other transient neurologic deficits. Auras should typically last from 5 to 60 minutes in most patients and represent progressive neurologic deficit with subsequent complete recovery. They usually precede the actual headache attack. Headaches commonly begin early in the morning but may occur at any time of the tension headache day or night. Nocturnal headache awakening the patient from sleep, characteristically occur in cluster headaches but have also been reported with migrain, mygrane