Our article concerns self-harm in adolescents. Self-harm is more common in adolescent and young adult populations than previously thought. It can present to professionals as a symptom of major mental health disturbance or it can form part of a cultural „norm“. Aim: The main aim of our research was to describe the most common causes and methods of self-harm in adolescents. Methods: We chose a qualitative research approach and used individual interviews with parents of children hospitalized after self-harm as a method of data collection. Results and Discussion: Through the content analysis of conducted interviews, the incomplete family and the family where the adolescent lived in a joint household with a biological mother and a foster father were identified as significant risk factors. A preferred way of self-harm was cutting with a sharp object, cigarette burning and drug-alcohol intoxication. Most parents nepodměrovala your child to consider to seek professional care. Conclusion: The results of our survey highlight the risks of self-harm to adolescents and the most common forms of self-harm. Evaluation by a mental health professional may assist in identifying and treating the underlying causes of self-injury.