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Another source reports Duchenne muscular dystrophy being a rare disease and having an occurrence of 7.1 per 100,000 male births. [9] A number of sources referenced in this article indicate an occurrence of 6 per 100,000. [10] Duchenne muscular dystrophy is the most common type of muscular dystrophy, [3] with a median life expectancy of 27–31 ...
Many affected people will eventually become unable to walk [2] and Duchenne muscular dystrophy in particular is associated with shortened life expectancy. Muscular dystrophy was first described in the 1830s by Charles Bell. [2] The word "dystrophy" comes from the Greek dys, meaning "no, un-" and troph-meaning "nourish". [2]
Facioscapulohumeral muscular dystrophy (FSHD) is a type of muscular dystrophy, a group of heritable diseases that cause degeneration of muscle and progressive weakness. Per the name, FSHD tends to sequentially weaken the muscles of the face, those that position the scapula, and those overlying the humerus bone of the upper arm.
DM1 is the most common form of myotonic muscular dystrophy diagnosed in children, with a prevalence ranging from 1 per 100,000 in Japan to 3–15 per 100,000 in Europe. [13] The prevalence may be as high as 1 in 500 in regions such as Quebec, possibly due to the founder effect .
In Qatar, MDC1A constituted 48% of congenital muscular dystrophy subtypes with estimated a point prevalence of 0.8 in 100.000 in a patient cohort from the Gulf and Middle East. [32] Contrastingly, in Australia it constituted 16% of all congenital muscular dystrophy subtypes namely the third most common subtype. [33]
Life expectancy in the U.S. is projected to increase from 78.3 years in 2022 to 79.9 years in 2035 and to 80.4 years in 2050 for all sexes combined, researchers said.
[12] [15] Patients display muscle weakness and cerebellar and ocular malformations, with a life expectancy of less than 1 year. [ 9 ] [ 15 ] An additional dystroglycanopathy phenotype is Fukuyama congenital muscular dystrophy (FCMD) caused by a mutation in the Fukutin (FKTN) gene, which is the second most common type of muscular dystrophy in ...
Distal spinal muscular atrophy type 1 (DSMA1), also known as spinal muscular atrophy with respiratory distress type 1 (SMARD1), is a rare neuromuscular disorder involving death of motor neurons in the spinal cord which leads to a generalised progressive atrophy of body muscles.
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