[Exsiccosis as an emergency condition in the aged].

The involutive restriction of the renal function and of the thirst and the reduction of body water also diminished the range of efficacy and possibility for adaptation of the water metabolism of old people. Under geriatric aspects the causes for the senile exsiccosis are discussed. It is found that in old patients the quicker metabolism imbalance means a stronger threat of life that the disease itself. Often the consideration of this problem in much cases of diseases can save the life of the old patient.