PT - JOURNAL ARTICLE AU - Monique L. Giroux TI - Parkinson disease: Managing a complex, progressive disease at all stages DP - 2007 May 01 TA - Cleveland Clinic Journal of Medicine PG - 313--328 VI - 74 IP - 5 4099 - http://www.ccjm.org/content/74/5/313.short 4100 - http://www.ccjm.org/content/74/5/313.full SO - Cleve Clin J Med2007 May 01; 74 AB - Parkinson disease is a complex neurodegenerative disease with both motor and nonmotor symptoms. Levodopa remains the mainstay of therapy but is associated with motor complications as the disease progresses. A levodopa-sparing strategy may reduce or delay the onset of motor complications. New medical and surgical therapies offer improved control of motor complications in advancing disease. Recognition and treatment of nonmotor symptoms can improve quality of life throughout the course of the disease.