title: The dilemma of differential diagnosis. Dr. Ernst and his colleagues reply.
mesh_terms: D000368:Aged; D000818:Animals; D001921:Brain / Q000473:pathology; D001927:Brain Diseases / Q000175:diagnosis* / Q000473:pathology; D003937:Diagnosis, Differential; D006801:Humans; D008016:Life Change Events; D012934:Social Isolation; D013577:Syndrome