I was in a MC accident and hit another rider pretty much head on. His bike impacted my right arm and right leg. Im black and blue. My arm is very tender and there is a hard lump under the skin and that area is numb. I assume this is where the impact affected me most. All motor functions work, just tenderness and the numbness and the mass under the skin
Hi. Thanks for the query. What you have under the skin is called a hematoma which is nothing but bleeding into the tissues due to injury. There is nothing you need to do about it. It'll gradually vanish as it gets degraded by the body. You can use painkillers if it bothers you.