| Muscular dystrophy (MD) is a genetic condition. | | | | these muscular dystrophies are carriers. |
| Muscular dystrophy (MD) is a group of uncommon | | | | Sometimes expand heart muscle problems and |
| diseases that cause muscle fibers to weaken and | | | | gentle muscle weakness. The disease can skip a |
| break down. MD affects the skeletal or voluntary | | | | generation until another son inherits the defective |
| muscles that manage movement in the arms, | | | | gene on the X-chromosome. In some cases of |
| legs, and trunk. It also can affect the heart and | | | | Duchenne's and Becker's muscular dystrophies, |
| other involuntary muscles, such as those in the | | | | the disease arises from a new mutation in a gene |
| gut. This disorder is predominantly found in Japan. | | | | slightly than from an inherited defective gene. |
| There are nine main types of Muscular dystrophy | | | | Symptoms and prognosis vary, depending on the |
| (MD) affecting people of all ages, from infancy to | | | | type of MD. The disease may affect some or all |
| middle age or later. Nine diseases including | | | | muscles, may develop during childhood or |
| Duchenne, Becker, limb girdle, congenital, | | | | adulthood. The disease may growth very slowly |
| facioscapulohumeral, myotonic, oculopharyngeal, | | | | or rapidly, and may or may not be severely |
| distal, and Emery-Dreifuss. | | | | disabling. |
| Duchenne's and Becker's muscular dystrophies are | | | | Boys with Duchenne's MD are generally in a |
| exceeded from mother to son through one of | | | | wheelchair by the age of 12 and uncommonly live |
| the mother's genes in a guide called X-linked | | | | past age 20; on the other hand, people with |
| recessive inheritance. Boys inherit an X | | | | facioscapulohumeral MD frequently have a normal |
| chromosome from their mothers and a Y | | | | life extent and generally stay able to walk, since |
| chromosome from their fathers. The X-Y | | | | the leg muscles are only gently affected. Also, in |
| mishmash makes them male. Girls inherit two X | | | | some types of MD, the rate of progression and |
| chromosomes, one from their mothers and one | | | | the amount of disability varies significantly from |
| from their fathers. The X-X combination | | | | patient to patient. Most types of MD affect the |
| determines that they are female. The defective | | | | heart muscle and this effect in cardiomyopathy. |
| gene that causes Duchenne's and Becker's | | | | There is no known alleviate for muscular |
| muscular dystrophies is situated on the | | | | dystrophy. Physical therapy, Occupational therapy, |
| X-chromosome. Women who have only one | | | | speech therapy and orthopedic instruments (e.g., |
| X-chromosome with the flawed gene that causes | | | | wheelchairs, standing frames) may be helpful. |