Parasitophobia as the presenting symptom of vitamin B12 deficiency.
D000368:Aged; D003702:Delusions / Q000209:etiology*; D004478:Ectoparasitic Infestations; D006801:Humans; D007501:Iron / Q000627:therapeutic use; D008297:Male; D014805:Vitamin B 12 / Q000627:therapeutic use; D014806:Vitamin B 12 Deficiency / Q000175:diagnosis* / Q000188:drug therapy
D007501:Iron; D014805:Vitamin B 12