Low total platelet count refers to the number of platelets in the peripheral blood is lower than the normal range, low total platelet count has two clinical causes: First, external factors cause low total platelet count: external factors cause low platelet count, commonly infectious factors and drugs, such as viral infections and certain anti-inflammatory painkillers, such as ibuprofen, fenbuterol, etc., may cause a decrease in the number of platelets, but this decrease However, this decrease is often mild, and the platelet count will gradually return to normal after the infection is controlled or after the medication is stopped. Second, blood system diseases caused by the reduction in the number of platelets. External blood system diseases cause platelet reduction, common diseases are aplastic anemia, acute leukemia, myelodysplastic syndrome, autoimmune thrombocytopenic purpura, all will cause a serious reduction in the number of platelets, often accompanied by severe bleeding symptoms.