Use and perceived effectiveness of complementary therapies in Parkinson's disease.

Introduction: Complementary therapies are commonly used by people with Parkinson's disease to relieve symptoms not fully addressed by pharmacologic and rehabilitation therapies currently available through medical clinics and programs. Three prior surveys in the US have shown that 40-85% of patients have used complementary therapies. We were interested in understanding what complementary therapies (CTs) our patients had used, to treat what symptoms, and whether they felt that the treatments were effective.