title: AIDS: the new "great imitator".
mesh_terms: D000163:Acquired Immunodeficiency Syndrome / Q000150:complications / Q000175:diagnosis*; D000368:Aged; D000544:Alzheimer Disease / Q000175:diagnosis; D003704:Dementia / Q000175:diagnosis / Q000209:etiology; D003937:Diagnosis, Differential; D006801:Humans