Typing can cause forearm pain. Improperly lifting heavy items can cause forearm pain. Sudden pain in the forearm is often caused by a muscle issue. Playing sports such as tennis may increase the chances of tendinitis. Ice packs can be used to treat forearm pain. Commonly used to treat tennis elbow, an elbow sleeve provides pressure and support for muscles and connective tissues around the forearm and elbow. A brace may be worn to reduce forearm pain caused by an injured wrist. Forearm and chest pain may be the sign of a heart attack. Warm baths can help relieve muscle soreness. Those who work in a vocation that requires swinging a hammer may frequently notice sore forearms.