If the body is always blue and purple, it is considered to be caused by subcutaneous hemorrhage, which is commonly caused by vascular reasons, thrombocytopenia, abnormal coagulation function and other factors.
1. Vascular causes: If the patient’s blood vessel elasticity decreases or decreases, thus causing an increase in blood vessel fragility, it is easy to lead to subcutaneous bleeding, thus causing skin bruising. It is common in allergic purpura, elderly people with arteriosclerosis or trauma patients.
2. Thrombocytopenia: such as leukemia, aplastic anemia, primary immune thrombocytopenia and other diseases, these diseases can lead to platelet generation disorder or platelet destruction, excessive consumption, thus causing bleeding, resulting in skin bruising.
3. Abnormal coagulation function: such as common hemophilia, is a group of bleeding disorders caused by hereditary thromboplastin generation disorder, which can lead to spontaneous or mild post-traumatic hemorrhage, hematoma, and so on, resulting in skin bruises.
In addition, in children, bleeding under the skin may occur as a result of trauma. When the skin is bruised and purple, it is necessary to go to the hospital in a timely manner, and the diagnosis should not be based on one symptom alone.