What is a contusion?
In terms of sports injuries a contusion is not very serious or very complicated either. Basically a contusion is a bruise that is caused by a blow to the surface of the skin, and because of the blow the tiny blood vessels under the skin called capillaries break and leak blood. It is this leaking of blood which causes the black & blue color that can be seen shortly after a contusion.
Is a contusion dangerous?
The answer is no a contusion is absolutely not dangerous. the only way that a contusion could become dangerous is if you suffer from a disease that slows or prevents your blood from clotting and stopping the bleeding. Also people who are on anticoagulants such as Aspirin need to be careful if they get a contusion because these drugs thin the blood and also slow the clotting process.
What do I do if I get a contusion?
really there is nothing you can do other than wait for the blood to clot and the vessels to heal themselves. Also there is really no trick to getting rid of the blue color after a contusion as you just have to wait for your body to get rid of the old blood on its own. Again the only time you would have to do something is if you are on anticoagulant drugs or if you have a disease that impairs your ability to clot your blood, in both of these cases you should seek immediate medical help.