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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]
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 ...
Diagnostic method. Physical exam, Medical history [ 3] Medication. Physical therapy, Surgery (scoliosis) [ 3] Ullrich congenital muscular dystrophy (UCMD) is a form of congenital muscular dystrophy. There are two forms: UCMD1 and UCMD2. [ 4] UCMD1 is associated with variants of type VI collagen, while UCMD2 is associated with variants of type ...
Fukuyama congenital muscular dystrophy (FCMD) is a rare, autosomal recessive form of muscular dystrophy (weakness and breakdown of muscular tissue) mainly described in Japan but also identified in Turkish and Ashkenazi Jewish patients; [5] fifteen cases were first described on 1960 by Dr. Yukio Fukuyama.
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 ...
In females, 1 in 50,000,000 [ 5] Duchenne muscular dystrophy ( DMD) is a severe type of muscular dystrophy predominantly affecting boys. [ 3][ 6][ 7] The onset of muscle weakness typically begins around age four, with rapid progression. [ 2] Initially, muscle loss occurs in the thighs and pelvis, extending to the arms, [ 3] which can lead to ...
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 ...
Oculopharyngeal muscular dystrophy ( OPMD) is a rare form of muscular dystrophy with symptoms generally starting when an individual is 40 to 50 years old. It can be autosomal dominant neuromuscular disease or autosomal recessive. The most common inheritance of OPMD is autosomal dominant, which means only one copy of the mutated gene needs to be ...