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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]
Duchenne muscular dystrophy is the most common type of muscular dystrophy, [3] with a median life expectancy of 27–31 years. [5] [11] However, with comprehensive care, some individuals may live into their 30s or 40s. [3] Duchenne muscular dystrophy is considerably rarer in females, occurring in approximately one in 50,000,000 live female ...
The first type is the congenital type known as early onset LAMA2 congenital muscular dystrophy type 1A or MDC1A. It presents at birth and has a relatively severe clinical presentation. Characteristically it manifests in muscle weakness, hyperlaxity or hypotonia, respiratory difficulties and developmental delay.
Congenital muscular dystrophies are autosomal recessively-inherited muscle diseases.They are a group of heterogeneous disorders characterized by muscle weakness which is present at birth and the different changes on muscle biopsy that ranges from myopathic to overtly dystrophic due to the age at which the biopsy takes place.
Myotonic dystrophy (DM) is a type of muscular dystrophy, a group of genetic disorders that cause progressive muscle loss and weakness. [1] In DM, muscles are often unable to relax after contraction. [1] Other manifestations may include cataracts, intellectual disability and heart conduction problems.
Duchenne muscular dystrophy Gowers's sign is a medical sign that indicates weakness of the proximal muscles , namely those of the lower limb . The sign describes a patient that has to use their hands and arms to "walk" up their own body from a squatting position due to lack of hip and thigh muscle strength.
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