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Duchenne muscular dystrophy: 310200: DMD: XR: Childhood Distal limbs progressing to generalised weakness, involving respiratory muscles The most common childhood form of muscular dystrophy, affects predominantly boys (mild symptoms may occur in female carriers). Characterised by progressive muscle wasting.
Muscle atrophy from intristic disease in an 18-year-old woman, weight 27 pounds (12.2 kg) Muscle atrophy from intristic disease in a 17-year-old girl with chronic rheumatism Muscle diseases, such as muscular dystrophy , amyotrophic lateral sclerosis (ALS), or myositis such as inclusion body myositis can cause muscle atrophy.
LAMA2-related (merosin deficient) congenital muscular dystrophy (Emery–Dreifuss muscular dystrophy) Collagen VI-related muscular dystrophy (Bethlem myopathy, Ullrich congenital muscular dystrophy) α-Dystroglycanopathies (Walker–Warburg syndrome, muscle-eye-brain disease) Laminopathies
The importance of correctly recognizing progressive muscular atrophy as opposed to ALS is important for several reasons. The prognosis is a little better. A recent study found the 5-year survival rate in PMA to be 33% (vs 20% in ALS) and the 10-year survival rate to be 12% (vs 6% in ALS).
Atrophy is the partial or complete wasting away of a part of the body. Causes of atrophy include mutations (which can destroy the gene to build up the organ), poor nourishment, poor circulation, loss of hormonal support, loss of nerve supply to the target organ, excessive amount of apoptosis of cells, and disuse or lack of exercise or disease intrinsic to the tissue itself.
Duchenne muscular dystrophy is a rare progressive disease that eventually affects all voluntary muscles and involves the heart and breathing muscles in later stages. Life expectancy is estimated to be around 25–26, [18] [59] but this varies. People born with Duchenne muscular dystrophy after 1990 have a median life expectancy of approximately ...
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.
Muscle contractures can occur for many reasons, such as paralysis, muscular atrophy, and forms of muscular dystrophy. Fundamentally, the muscle and its tendons shorten, resulting in reduced flexibility. Various interventions can slow, stop, or even reverse muscle contractures, ranging from physical therapy to surgery.
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