Hemorrhagic diathesis caused by pathology of platelet link of hemostasis is a group of diseases characterized by increased tendency to bleeding due to quantitative or qualitative disorders of platelets.These pathologies include thrombocytopenias (decreased platelet count) and thrombocytopathies (functional defects of platelets), which may be inherited or acquired. The article discusses the main mechanisms of pathogenesis, clinical manifestations, diagnostic methods and modern approaches to the treatment of these conditions. Special attention is paid to the distinguishing features of platelet hemorrhagic diatheses, their differential diagnosis with coagulopathies, as well as relevant methods of laboratory research.Therapeutic strategies including the use of hemostatic drugs, immunomodulatory therapy, platelet transfusions and innovative treatment methods such as target therapy and genetic engineering are considered. The relevance of the topic is due to the high prevalence of platelet disorders and their potential danger to the life of patients. Modern research in the field of hematology is aimed at developing new diagnostic methods and personalized approaches to the treatment of these pathologies.

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