Parkinson's disease. Parkinson's disease (PD) is a chronic, progressive neurological disorder for which at present there is no known cure. The core symptoms are tremor, rigidity (stiffness), bradykinesia (slowness of movement) and postural instability (balance difficulties).eurodegenerative diseases are defined as hereditary and sporadic conditions which are characterized by progressive nervous system dysfunction. These disorders are often associated with atrophy of the affected central or peripheral structures of the nervous system.
To keep the carpet clean and fresh, parents should clean high-traffic carpet areas every six to 12 months and professionally clean the entire carpet once annually. Pet owners typically require carpet cleaning more often, due to dogs tracking in dirt and grass, pets shedding, and any urine or accidents your pet may have on the carpet.
How often to replace it: This depends on the car, manufacturer, and year. The 3,000 miles or every six months saying doesn't really apply any more. Instead, check your owner's manual for the manufacturer's recommendations for changing your engine oil.