Usually, when bruising occurs on the body, the cause needs to be clarified first which may be related to trauma, thrombocytopenic purpura, aplastic anemia and so on. If the bruise is caused by trauma, it can usually be treated with ice packs within 48 hours and heat packs after 48 hours. If the bruise is caused by a disease, then you need to consult a doctor for diagnosis and treatment. 1.Ice within 48 hours: most of the bruises are related to trauma, when the body is subjected to external forces, blood vessels may rupture, which leads to red blood cells seeping into the skin, resulting in bruising. In the first 48 hours after a bruise arises, it can be treated by applying ice packs. Ice compresses can better contract the body’s capillaries, thus reducing the symptoms. 2.48 hours after the hot compress: in the bruise after 48 hours, because at this time the symptoms basically tend to stabilize. Hot compresses can accelerate the absorption of local metabolites, and then accelerate the elimination of bruising symptoms, so you can through the appropriate hot compresses, or infrared irradiation and other physical therapy measures for treatment. Can also be used externally safflower oil and other medications, can achieve pain relief, promote healing effect. 3. Medical diagnosis: In addition to trauma, some diseases may also cause bruising, such as thrombocytopenic purpura or leukemia, etc., you can consult a doctor in time to clarify the cause of the disease, symptomatic treatment. It is important to note that if the bruising symptoms are more serious, you should pay enough attention to timely medical treatment, so as not to delay the condition.