If you have ever had bursitis or tendinitis you know how much pain either of these can cause. Early on in my career I had Achillies tendinitis so bad that I could hardly dance. If you or a dancer you know suffers from either of these conditions, it is important to get medical help so that you can come up with a good treatment plan. For some background information on what the conditions are and some details on prevention, check out the National Institutes of Health.