Acupuncture for the treatment or management of chronic pain.

Evidence supports the safety and efficacy of acupuncture compared with no treatment, but it is unclear what role the placebo effect plays in acupuncture's efficacy. In determining whether acupuncture is indicated for a given individual or patient population, clinicians should consider acupuncture's effectiveness compared with no acupuncture--as well as the effectiveness, safety, and cost of alternative types of treatment.