Long-term Prognosis of Cluster Headache: a Retrospective Cohort Study
Long-term Prognosis of Cluster Headache: a Retrospective Cohort Study
Cluster headache is a syndrome characterized by disabling headache and accompanying autonomic
 symptoms. Despite cluster headache is called "suicide headache", its natural history has not
 been well investigated. The investigators aimed to investigate its disease course, overall
 prognosis, and treatment pattern in retrospective cohort.
Inclusion Criteria:

 -  Patients who were diagnosed as cluster headache

 -  More than 5 years after the first visit

 Exclusion Criteria:

 -  Subjects who refused the telephone visit