Tennis Elbow
Tennis elbow, or lateral epicondylitis, is the most common injury in patients seeking medical attention for elbow pain. Exactly what causes tennis elbow is unknown, but it is thought to be due to small tears of the tendons that attach forearm muscles to the arm bone at the elbow joint. Treatment of tennis elbow can be a frustration for people with this condition, but understand why this occurs and what you can do about it will help to relieve your symptoms.
Source: Verywell Health