The involvement of the autonomic nervous system in cluster headache.
D003027:Cluster Headache / Q000503:physiopathology*; D006801:Humans; D007031:Hypothalamus / Q000503:physiopathology; D010275:Parasympathetic Nervous System / Q000503:physiopathology*; D013564:Sympathetic Nervous System / Q000503:physiopathology*; D014653:Vascular Headaches / Q000503:physiopathology*