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The following is a summary of MD from a personal point of view. This point of view is one of my husband, Thom, whom is Living with Muscular Dystrophy.
Thom was diagnosed with Congenital Myopathy at the age of 11, along with his 3 brothers and father. The congenital myopathies are a group of the 40 known neromuscular conditions which cause weakness and wasting of the muscles. In general, symptoms are present at birth but may not be recognized until later on in childhood or even in adult life, such as in Thom's case.
Inheritence:
Congenital Myopathy is generally an inherited disorder. Although the exact genetic cause is unknown, different patterns of inheritance are recognized; these are known as autosomal recessive and autosomal dominant. Thom and his brothers inherited Congenital Myopathy from their father, therefore they were effected in the autosomal dominant type of inheritance. In this manner of inheritance, one of the parents is affected, maybe mildly, but carries the abnormal gene. Each child (of either sex) of that affected parent has a 50% chance of being affected. In the autosomal recessive type, both parents are carriers of the condition, and the risk of a child of either sex being affected is 25%. Also in the recessive manner, onset is generally earlier, and the condition generally causes severe muscle weakness later on.
In the remaining cases there does not appear to be a clear pattern of inheritance and these are described as 'sporadic' cases which means they occur randomly, with very little risk of other children in the family being affected. However, people who are themselves sporadic cases will be at risk of passing the condition on to their children.
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