Muscular Dystrophy (MD) is a classification for a group of over 40 individual neuromuscular diseases. It is estimated that about 200,000 Americans have been diagnosed with MD, a condition characterized by continuing degeneration and atrophy of the muscle cells and fibers. All forms of Muscular Dystrophy include muscle weakness as the major symptom. Muscular Dystrophy is genetic and is caused by alterations in genes. Prevalence rates of Muscular Dystrophy are imprecise and depend on the diagnostic criteria applied.