The investigation of criminal cases related to sex crimes determines the range of circumstances to be immediately proved during investigations. Issues arising in the process of conducting such cases must be resolved as part of forensic medical examinations. Illegal acts of a sexual nature generally end in the violation of human health, not only physical with bodily harm but also psychological. During such examinations, specialists of various clinical specialties are included in the composition of expert commissions. These are specialists in the fields of obstetrics-gynecology, venereology, traumatology, psychiatry, and clinical psychology. During investigation and trial, important information can be provided by medical documents on the state of health of the victim, including the testimony of medical workers. Not only forensic medical experts who conducted examinations but also medical workers are called to court hearings as witnesses to incidents. This article analyzed the commissions of forensic medical examinations in a teenager harmed by violent sexual acts. The results of forensic medical examinations were analyzed. This article provides an expert observation of a victim of crimes against sexual inviolability that led to severe complications. During the investigation, the development of a mental disorder in the teenager was examined, and a forensic medical examination was performed. Psychological injuries are no less serious than physical ones. The body’s response to stress causes a pathological state of the psyche. Such a painful reaction can persist for many years. A prolonged depressive reaction due to an adaptation disorder arose in the victim after the unlawful actions committed against her with a direct causal relationship. When conducting forensic medical examinations related to illegal acts of a sexual nature, specialists in the fields of gynecology, traumatology, venereology, psychiatry, and clinical psychology must take part in the examinations.