Hematoma is localized bleeding outside of blood vessels, caused by disease or trauma such as injury or surgery, and may involve ongoing seepage of blood from damaged capillaries. It should not be confused with hemangioma, which is an abnormal growth of blood vessels in the skin or internal organs.
A collection of blood (or a hemorrhage) can be aggravated by anticoagulant medication (blood thinner). Blood seepage may occur if heparin is administered intramuscularly.
A hematoma, also spelled haematoma, or blood suffusion is a localized bleeding outside of blood vessels, due to either disease or trauma including injury or surgery and may involve blood continuing to seep from broken capillaries.
Upper Arm Bruise
In this case, people are often concerned about melanoma. If it occurs suddenly within a few days, it is usually not melanoma. If it develops slowly over several months, melanoma should be suspected.
Blood donation ― Bruise
Unlike melanoma, these lesions are pushed out at a rate of 1 mm per month.
A collection of blood (or a hemorrhage) can be aggravated by anticoagulant medication (blood thinner). Blood seepage may occur if heparin is administered intramuscularly.