title: Metabolic abnormality in cluster headache.
mesh_terms: D000293:Adolescent; D000328:Adult; D002794:Choline / Q000097:blood*; D003027:Cluster Headache / Q000097:blood* / Q000175:diagnosis; D003937:Diagnosis, Differential; D004912:Erythrocytes / Q000032:analysis*; D006801:Humans; D008094:Lithium / Q000494:pharmacology; D008297:Male; D008875:Middle Aged; D008881:Migraine Disorders / Q000097:blood / Q000175:diagnosis; D014653:Vascular Headaches / Q000097:blood*
chemical_list: D008094:Lithium; D002794:Choline