What Causes a Sprain? Where Do Sprains Usually Occur? What Are the Signs and Symptoms of a Sprain? Doctors closely observe an injured site and ask questions to obtain information to diagnose the severity of a sprain. In general, a grade I or mild sprain is caused by overstretching or slight tearing of the ligaments with no joint instability. A person with a mild sprain usually experiences minimal pain, swelling, and little or no loss of functional ability. Bruising is absent or slight, and the person is usually able to put weight on the affected joint.
When To See a Doctor for a Sprain
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