Mental disorders in elderly are closely connected with different forms of somatic diseases.

Chronicle and progredient disease, such as hypertensive disease, cardiovascular insufficiency and diabetes melitus, often cause different forms of vascular dysfunctions, especially vascular dementia. In such cases typical complications are insults and infarcts of cerebral brain. In case of oncological disease mental disorders were various. First of all oncoligical disease is a severe stress factor that caused depressive and anxiety disorders, accompanied by complete changing of behavior motivation. The main purpose of persons activity become an intention to throw off an illness. Anxiety and depressive symptoms were closely connected with changing of somatic state, results of objective investigations, method of treatment. Level of social functioning in such cases decrease, firstly in relationship with spouses and relatives and employment. In late stages of oncological disease with symptoms of intoxication, cachexia and insufficiency of most internal organs delirium, not superimposed on dementia could developed. Also in genesis of such disorder a great role has operations with transfusion treatment and usage of narcotic analgesics and chronicle pain. Clinical picture are characterized by syndrome of impaired consciousness such as soporific state or coma, sometimes by cognitive dysfunction, insomnia, hallucinations. Duration of delirium is characterized by interchange of improve and degradation of mental state over a day. Social adaptation is decreased, such patients need care and custody. They couldn't make a proper decisions, dispose their property. Corrective assessment of somatic diseases may help to make prognosis of mental disorders and improve treatment.