Differential diagnosis in the elderly.
D000368:Aged; D003937:Diagnosis, Differential; D005162:Factitious Disorders / Q000175:diagnosis; D006801:Humans; D008370:Manuals as Topic; D008875:Middle Aged; D010259:Paranoid Disorders / Q000175:diagnosis; D012559:Schizophrenia / Q000175:diagnosis*; D012563:Schizophrenia, Paranoid / Q000175:diagnosis; D012565:Schizophrenic Psychology