Also know as Tennis Elbow, Lateral Epicondylitis is an inflammation, irritation or slight tearing of the tendons or muscles on the outer (lateral) side of the elbow. Common symptoms include pain, swelling, redness or irritation on the outer, back side of the forearm. Pain can extend down the elbow to the wrist and may be present during rest. Pain may also be experienced when gripping objects, turning your hand or swinging your arm, especially when bending wrist backward away from palm. Most common cause is improper backhand stroke in racquet sports such as tennis; playing with a racquet that is too tightly strung or too short; having weak shoulder or wrist muscles or any repetitive actions that involve extending your wrist or rotation of your forearm.