title: [The most important question in diagnosing cluster headache is the duration of the extremely severe headache].
abstract: The most important question in diagnosing cluster headache is the duration (usually 15 to 180 min) of the extremely severe headache. This is illustrated with two case stories.
authors: Dansk Hovedpine Center, Neurologisk Afdeling, Glostrup Hospital, Nordre Ringvej 69, 2600 Glostrup, Denmark. rigj@regionh.dk
authors: Rigmor
authors: R
authors: Jensen
authors: Peer
authors: P
authors: Tfelt-Hansen
mesh_terms: D000293:Adolescent; D000328:Adult; D003027:Cluster Headache / Q000150:complications / Q000175:diagnosis; D005260:Female; D006801:Humans; D008297:Male; D013997:Time Factors