SMA (Spinal Muscular Atrophy): What It Is, Symptoms & Types
Spinal muscular atrophy (SMA) is a genetic condition that causes worsening muscle weakness. There are five subtypes, which range in severity and age of onset. There’s no cure for SMA, …
Types of Spinal Muscular Atrophy (SMA) - Diseases | Muscular …
Spinal muscular atrophy (SMA) types 1 through 4 all result from a single known cause — a deficiency of a protein called SMN, which stands for "survival of motor neuron." Deficiency of …
Types of Spinal Muscular Atrophy (SMA) - mySMAteam
2024年9月30日 · Spinal muscular atrophy (SMA) is an inherited neuromuscular disorder — meaning it affects the nerves that control muscle movement. It’s characterized by progressive …
Spinal Muscular Atrophy (SMA): Types, Symptoms, Causes
2023年9月20日 · Spinal muscular atrophy (SMA) is a genetic disease that causes muscle weakness, making it difficult to stand, walk, move the arms and head, and even breathe or …
Spinal Muscular Atrophy | National Institute of Neurological …
2024年7月30日 · Traditionally, there are five types of this form of SMA, which are classified based on the average age of onset and severity of symptoms. The traditional classification of SMA …
Spinal Muscular Atrophy: Types of SMA - Healthline
2022年10月17日 · Though everyone with spinal muscular atrophy (SMA) has a gene mutation, the onset, symptoms, and progression vary considerably. Learn the types of SMA.
Spinal muscular atrophy - Wikipedia
Spinal muscular atrophy (SMA) is a rare neuromuscular disorder that results in the loss of motor neurons and progressive muscle wasting. [3][4][5] It is usually diagnosed in infancy or early …
Spinal muscular atrophy (SMA): Types, symptoms, and treatment
2019年7月10日 · There are different types of SMA. They vary in terms of when symptoms start to appear and how they affect life expectancy and the quality of life. The National Institute of …
Spinal Muscle Atrophy - StatPearls - NCBI Bookshelf
2023年7月17日 · Spinal muscular atrophy (SMA) denotes a collection of inherited clinical syndromes causing degeneration of anterior horn cells in the spinal cord with associated …
Spinal Muscular Atrophy (SMA) - Johns Hopkins Medicine
Types of SMA. Spinal muscle atrophy is classified as type 1, 2, 3 or 4 depending on age of onset. Most cases are progressive — that is, symptoms worsen instead of improving – but in general …
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