Involution old age limit is related to general health, cultural and economic living conditions.

Two stages of old age are currently recognized: early old age (65 to 75 years) and over 75 years - late old age period.

Old age period is the third life cycle period in which aging of the brain and eventual pathological changes with respective organic psychopathological onsets are finalized.

In many countries, number of the population over 65 years of age increases. The same applies for our country.

Term of psychic disorders includes miscellaneous psychic conditions, pathologic in terms of symptom intensity, personality and social behavior changes, and reflects on social life of the ill individual and its family.

Psychiatric syndromes and disorders in older population Rogina divides into two groups:

1. - disorders of emotional reacting and behavior, without manifestations of other organic brain or physical disorders and

2. - alternations caused by primary brain pathology, clinically presented as organic brain psycho-syndrome with different intensity and different pathogenesis etymology (cardiovascular, cerebro-vascular, neoplastic, metabolic, etc.)

A combination of physical illness and mental disorder is the most common cause of the first hospitalization in older age.