Hello, i've been experiencing exercise related knee pain with mild swelling. i tango dance and if i dance more than an hour on more than three days in a week my left knee becomes mildly swollen, stiff and mildly painful. i'd rather not stop dancing but w

Knee effusion: The inner knee lining sometimes produce excess amount of fluid makes knee swollen and painful. You can relieve pain and swelling and promote healing and flexibility with RICE - Rest, Ice, Compression, and Elevation. If your symptoms persist in spite of RICE then see an orthopedic surgeon to get evaluation of the knee this includes an mri of the knee.