According to the World Health Organization, acupuncture can treat the following conditions: low back pain, neck pain, sciatica, tennis elbow, knee pain, periarthritis of the shoulder, sprains, facial pain (including craniomandibular disorders), headache, dental pain, temporomandibular (TMJ) dysfunction, rheumatoid arthritis, induction of labor, correction of malposition of fetus (breech presentation), morning sickness, nausea and vomiting, postoperative pain, stroke, essential hypertension, primary hypotension, renal colic, leucopenia, adverse reactions to radiation or chemotherapy, allergic rhinitis (including hay fever), biliary colic, depression (including depressive neurosis and depression following stroke), acute bacillary dysentery, primary dysmenorrhea, acute gastritis, peptic ulcer, and acute and chronic gastritis.