Interstitial lung disease is the name for a group of diseases that affect the lungs, for example, interstitial pneumonitis, black lung, Farmer's lung, mold, grasses, fumes, and autoimmune diseases. The most common symptoms are a dry cough and shortness of breath. Treatment and prognosis depends upon the type of lung disease.
Parkinson's disease is a non-fatal neurological disease that affects the part of the brain that produces the vital chemical dopamine; sufferers typically experience bodily tremors, stiff joints and muscles, or have difficulty moving.
Mayo Clinic: Parkinson's Disease. National Parkinson Foundation: Genetics and Parkinson's Disease, What Is Parkinson's? American Parkinson Disease Association: Theories about What Causes Parkinson's. U.S. National Library of Medicine: Well-Water Consumption and Parkinson's Disease in Rural California. National Institute on Aging: Parkinson's Disease.