Thrombocytopenic purpura, also known as primary immune thrombocytopenia, manifests itself in the face with symptoms such as facial swelling, petechiae, ecchymosis and pallor. 1. After severe coughing, vomiting or constipation, it causes increased intracapillary pressure in the facial capillaries, and red blood cells leak out of the blood vessels and cause facial swelling, petechiae and ecchymosis. If the bleeding is more severe or lasts longer, anemia may occur, resulting in pallor. 2. In addition, primary immune thrombocytopenia may also show clinical manifestations in other parts of the body, such as the oral and nasal organs manifesting as blood blisters in the oral mucosa and bleeding gums. Skin bleeding manifests as skin bruises and petechiae. The gastrointestinal tract manifests as blood in vomiting, blood in stools, black stools, as well as excessive menstruation in women during their reproductive years, and retinal bleeding in the elderly. Primary immune thrombocytopenia patients should not be strenuous exercise, should not carry heavy loads, should not stand for a long time, should be under the guidance of the doctor to use medication, and appropriate amount of vitamin supplementation, in order to protect blood vessels to reduce bleeding.