Abstract : In this article, we will present a case study of the somatic manifestations of stress in a 15-year-old teenager. In particular, under psychological stress, the teenager developed multiple stretch marks in the lumbar region. Despite the fact that the literature describes the presence of multiple striae in adolescents, we decided to study the case using a multidisciplinary approach, namely, we assessed both the stress level and cognitive functions (we used the Adolescent Stress Questionnaire ASQ-14 - a short version and a Mini-Mental State Examination -MMSE scale), as well as the endocrine system. The results of the study show that the stress index according to the ASQ-14 is 52; The results of laboratory studies showed that the concentrations of TSH and 25 (OH) D in the blood are outside the normal range. No adrenal pathology was detected. The study of such cases allows us to once again remind doctors of the rather complex and multifaceted interdependence of psychosomatic connections. The term "stress stretch marks" is rarely found in scientific literature, but, in our opinion, it is quite justified to apply it to our case.