title: Vitamin B12 deficiency due to psychotic-induced malnutrition.
mesh_terms: D000328:Adult; D000749:Anemia, Megaloblastic / Q000209:etiology; D006801:Humans; D008297:Male; D009748:Nutrition Disorders / Q000150:complications*; D010243:Paralysis / Q000209:etiology; D011618:Psychotic Disorders / Q000150:complications*; D014806:Vitamin B 12 Deficiency / Q000209:etiology*