Book excerpt: Autonomic dysfunction is one of the most prevalent non-motor symptoms that occurs in Parkinson's disease. Autonomic Dysfunction in Parkinson's Disease provides up to date information on this important topic, which affects quality of life of these patients. This include a large number of domains: orthostatic hypotension, excessive sweating, dry eyes, constipation, weight loss, increased sensitivity to heat and cold, sexual dysfunction. - Provides comprehensive reviews on different topics of autonomic dysfunction in Parkinson's disease - Each chapter covers a specific autonomic symptom: classification, assessment, treatment - Presents the newest information on each autonomic symptom in Parkinson's disease