My 10 year old son plays baseball and has been pitching more lately. He developed an unexplained bruise that keeps expanding from his elbow to his mid forearm. All bloodwork came back ok, X-rays were negative and ultrasound just showed soft tissue swelling. There is no infection. Can you tell me what this might be
Hello, I think this is an overuse syn Chat Doctor.  I suggest to decrease sport activities for a while. Keep a soft brace for the forearm for 2 weeks. Then after 2 weeks the son can start gradually to increase the activity. It may be a chronic problem if he continues till play baseball, but it will go way gradually after 16 years old. Hope I have answered your query. Let me know if I can assist you further.