title: Tryptophan deficiency stupor--a new psychiatric syndrome.
mesh_terms: D000368:Aged; D000818:Animals; D002276:Carcinoid Tumor / Q000150:complications; D005260:Female; D006801:Humans; D007980:Levodopa / Q000009:adverse effects / Q000627:therapeutic use; D008286:Malabsorption Syndromes / Q000150:complications; D008297:Male; D001523:Mental Disorders / Q000209:etiology* / Q000378:metabolism*; D008875:Middle Aged; D009132:Muscles / Q000503:physiopathology; D010300:Parkinson Disease / Q000150:complications / Q000188:drug therapy; D012701:Serotonin / Q000097:blood; D013577:Syndrome; D014364:Tryptophan / Q000097:blood / Q000172:deficiency*
chemical_list: D012701:Serotonin; D007980:Levodopa; D014364:Tryptophan