In recent years, cerebral vascular diseases have been increasingly detected in young patients. It is due not only to better physicians’ knowledge about this pathology, but also to the improvement of its diagnosis methods. Modern neuroimaging techniques allow us to clarify the nature of hemorrhage, to determine the volume and location of intracerebral hematoma, and to establish the degree of concomitant edema and dislocation of the brain. However, despite the high accuracy of the research, it is not always possible to establish the cause that led to a brain accident, which greatly affects the tactics of management and outcomes in this category of patients. A special feature of the structure of cerebrovascular diseases of young people is the high proportion of hemorrhagic stroke, the causes of which are most often arterio-venous malformations. Meanwhile, there are a number of other causes that can lead to hemorrhage into the brain substance. These include disorders of blood clotting, and various vasculitis, and exposure to toxic substances and drugs, and tumor formations (primary and secondary). All these pathological factors outline the range of diagnostic search in young patients who underwent hemorrhagic stroke. Diagnosis of these pathological conditions with the help of modern visualization techniques is considered to be easy, but this is not always the case. In this article, the authors give their own clinical observation of a hemorrhagic stroke in a young patient, which demonstrates the complexity of the diagnostic search in patients with this pathology.