Background and Aims:
An investigation of the  self-harm behavior of adolescents

Methods:
Anonymous screening study of schoolchildren (10 - 18 years, n = 1780). Personal belief questionnaire – borderline personality disorder (Butler et.al., 2002); "Method of body modification and self-harm" (Polish N.A, 2017); "Suicidal personality-19" (Yunatskevich P.I., 2009); "Express test to identify  attitude of adolescents to the substance use "; questionnaire "Risk group of drug addiction" (Khasan B.I., Tyumeneva Y.A., 2003), A single-factor analysis of variance was used, SPSS17.

Results:
For 10-11 years, risk of prevalence factor of body self-harm (SH) - 93.8%, 12-15 years - 72.1%; 16-18 years old -74%.  Positive attitude to body SH  presents  at  10-11 and 12-15 years: 34.4% and 35%. Reduction of the indicator to 25% noted in  16-18 years. Substance use (SU) is expressed in the older age group: 10.4% use tobacco at 16-18 years; 4,5% - in 12-15 years and 3,1% - in 10-12 years. They drink alcohol at the age of 16-18 - 35%, 12-15 years - 17.1%, 10-11 years - 3.1%. Active interest in SU increases during the periods 10-11 (2.91%) and 16-18 years (2.92%), at the age of 12-15 it decreases to 2.61%.The maximum suicide risk was revealed in 12-15 years (2.86%), the minimum ​​in 10-12 years (1.78%).

Conclusions:
Instrumental SH prevail in 10-11 years; in 12-15 years the risk of suicide increases; at the age of 16-18, the use of psychoactive substances is increasing. Interest in instrumental types of self-harm decreases at the age of 12-15 years against the background of increased risk of suicidal behavior.

04 - FEATURES OF SELF-HARM BEHAVIOR OF ADOLESCENTS ASSOCIATED WITH THE SUBSTANCES USE