To diagnose your tennis elbow, your doctor will do a thorough exam. He or she will want you to flex your arm, wrist, and elbow to see where it hurts. You may also need imaging tests, such as an X-ray or MRI (magnetic resonance imaging) to diagnose tennis elbow or rule out other problems.
· Tenderness on the outside of the elbow.
· Morning stiffness of the elbow with persistent aching.
· Soreness of the forearm muscles.
· Elbow pain is worse when grasping or holding an object (a sign that active inflammation is present because of the tendinitis)
Tennis elbow is often an overuse injury. It occurs when the muscles and tendons in your forearm are strained due to a repetitive or strenuous activity. Tennis elbow can also sometimes occur after banging or knocking your elbow
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