[Iatrogenesis].

Iatrogenesis, earlier considered to be an unfavorable effect of the word on the patient has acquired a new essence. Iatrogenesis means an unintentional and often inevitable complication resulting from contact with the patients, the influence upon him or due to inaction of medical personnel during prophylactic, diagnostic and curative procedures. An analysis of clinical and social sources of iatrogenesis gives grounds to find out ways to make it less.