Acupuncture involves the insertion of very thin needles through your skin at strategic points on your body. Acupuncture is used mainly to relieve discomfort associated with a variety of diseases and conditions, including: • Chemotherapy-induced and postoperative nausea and vomiting. • Dental pain. • Fibromyalgia. • Headaches, including tension headaches and migraines. • Labor pain. • Lower back pain. • Neck pain. • Osteoarthritis. • Menstrual cramps. • Respiratory disorders, such as allergic rhinitis. • Tennis elbow.