Although<unk>  is often compared to cluster headaches, it is much less prevalent, occurring in only 1–3% of those who experience cluster headaches.<unk>  occurs roughly in 1 in 50,000 people, while cluster headaches are comparatively more common and are found in 1 in 1000 people. Cluster headaches occur primarily in men, while<unk>  is more commonly diagnosed in women. The female to male ratio of diagnosed patients can range anywhere from 1.6:1 to 2.36:1. Symptoms may begin to appear at any age, but onset usually occurs in adulthood with a mean starting age within the thirties.
Chronic paroxysmal hemicrania
Trigeminal autonomic cephalgia
Trigeminal trophic syndrome
Trigeminal neuralgia
Atypical trigeminal neuralgia
Post-dural-puncture headache
Alternating hemiplegia of childhood
Sporadic hemiplegic migraine