When your knee, elbow, wrist or shoulder is affected by tendonitis, some of the symptoms may include redness and heat in the area. If you have these symptoms, it is important to rule out any type of infection that must be treated immediately. If the swelling is simply a normal part of tendonitis, then you can treat these symptoms with the application of ice packs or a bag of frozen vegetables to reduce the swelling.
In the beginning, you will want to apply ice-cold 3 to 4 times a day for at least a half an hour, and then you can make the applications a little less frequent. Avoid applying ice directly to the skin, but use an ice pack or a bag. Try to rest and elevate the affected area when applying cold treatments. The combination of rest and cold treatment are some of the most effective ways of dealing with tendonitis.