[Psychological disorders and behavioral symptoms in dementia and differential diagnostic significance]

Dementia is one of the most common diseases in the elderly. Rapid and comprehensive diagnosis and appropriate treatment are imperatives. Over the course of the disease, psychiatric disturbances and behavioral abnormalities will frequently occur with the most variable of manifestations and forms. The burden on caregivers is immense. Patients usually respond well to a combination of milieu therapy and pharmacological management. The nature and the manifestation of the disorder can provide important clues for differential diagnosis.