Bruises can be caused by physiological factors, blood diseases, medications and liver factors.
1. Physiological factors: congenital weak blood vessels in the leg, when the leg is bumped, it is easy to cause blood vessels to rupture and bleed, subcutaneous hemorrhage and bruising can appear after the performance of bruising.
2. Blood diseases: when accompanied by leukemia, primary immune thrombocytopenia and other blood diseases, it can lead to a decrease in the number of platelets in the body, when the leg is bumped and traumatized, the local capillary bleeding is not easy to stop, which can cause blood pooling and bruising.
3. Drug factors; long-term use of anticoagulant drugs and antiplatelet drugs can also be traumatized in the legs and other parts of the blood is not easy to coagulate the situation, which can appear as soon as the legs are touched is a piece of bruising performance.
4. Liver diseases: such as cirrhosis of the liver, due to liver insufficiency leading to a decrease in coagulation factors, easy to appear the phenomenon of subcutaneous bleeding.
If the leg bruise does not go away for a long time or the petechiae are big, you should consult a doctor as soon as possible. Under the guidance of specialists, you should actively carry out appropriate treatment, which will help to alleviate the uncomfortable symptoms as soon as possible.