Butalbital sedating speed dating north west
This classification was updated and revised in 2004.
For practical clinical purposes, however, all headaches can be classified as one of the primary headache syndromes or as a headache that is caused by or secondary to an underlying disease process or medical condition.
In 1988, the International Headache Society published a long, detailed classification of headache, which has proved helpful for research purposes because it has led to more reproducible and reliable studies in the field of headache.
Migraine and cluster headaches are believed to initially begin in the brain as a neurologic dysfunction, with subsequent involvement of the trigeminal nerve and cranial vessels.
In cluster headache, most, but not all, sufferers have overactivity of the parasympathetic nervous system.
Migraine is three times more common in female patients.
The prevalence of cluster headache is less certain.
During the headache attack however, cluster and migraine patients might have some abnormal clinical findings, and many patients with tension-type headache have demonstrable tightness in the cervical muscles, with limitation of neck motion, scalp tenderness, or both.