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Bethlem myopathy is a slowly progressive muscle disease characterized predominantly by contractures, rigidity of the spine, skin abnormalities and proximal muscle weakness. [ 5][ 11] Symptoms may present as early as infancy, with typical contractures and hyperlaxity of joints; however, in some patients, symptoms may go unnoticed until ...
Muscular dystrophies ( MD) are a genetically and clinically heterogeneous group of rare neuromuscular diseases that cause progressive weakness and breakdown of skeletal muscles over time. [ 1] The disorders differ as to which muscles are primarily affected, the degree of weakness, how fast they worsen, and when symptoms begin. [ 1]
[1] [3] In 1995, the disorder was linked to mutations in a gene coding for the protein fukutin (the FCMD gene). Fukuyama congenital muscular dystrophy is the second most prevalent form of muscular dystrophy in Japan. One out of every 90 people in Japan is a heterozygous carrier. [medical citation needed]
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. The incidence of congenital myotonic dystrophy is thought to be ...
Gowers's sign. 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. It is named after William Richard Gowers. [ 1][ 2]
2.27–10 per 100,000 [ 6] Limb–girdle muscular dystrophy ( LGMD) is a genetically heterogeneous group of rare muscular dystrophies that share a set of clinical characteristics. [ 7] It is characterised by progressive muscle wasting which affects predominantly hip and shoulder muscles. [ 8] LGMD usually has an autosomal pattern of inheritance.
Congenital muscular dystrophies (CMDs) are autosomal recessively inherited, except in some cases of de novo gene mutation and Ullrich congenital muscular dystrophy. [ 8][ 9] This means that in most cases, both parents must be carriers of a CMD gene in order for it to be inherited. CMDs are heterogenous and thus far there have been 35 genes ...
Andrew, a 14-year-old rising freshman, lives with Duchenne muscular dystrophy, a progressive neuromuscular condition that causes muscle weakness, breathing difficulties and heart problems. The ...