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  2. X-linked spinal muscular atrophy type 2 - Wikipedia

    en.wikipedia.org/wiki/X-linked_spinal_muscular...

    Digital contractures at birth that remain throughout the child's life; Evidence of degeneration and loss of anterior horn cells (i.e., lower motor neurons) in the spinal cord and brain stem; A child with these symptoms are likely to have X-linked spinal muscular atrophy. In order to confirm this the most practical measures to take next are: [8]

  3. Spinal muscular atrophy - Wikipedia

    en.wikipedia.org/wiki/Spinal_muscular_atrophy

    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 childhood and if left untreated it is the most common genetic cause of infant death. [ 6 ]

  4. Spinal muscular atrophies - Wikipedia

    en.wikipedia.org/wiki/Spinal_muscular_atrophies

    Autosomal recessive proximal spinal muscular atrophy, responsible for 90-95% of cases and usually called simply spinal muscular atrophy (SMA) – a disorder associated with a genetic mutation on the SMN1 gene on chromosome 5q (locus 5q13), diagnosed predominantly in young children and in its most severe form being the most common genetic cause ...

  5. Congenital distal spinal muscular atrophy - Wikipedia

    en.wikipedia.org/wiki/Congenital_distal_spinal...

    Congenital distal spinal muscular atrophy (cDSMA), also known as distal hereditary motor neuropathy (or neuronopathy) type VIII (dHMN8), is a hereditary medical condition characterized by muscle wasting (), particularly of distal muscles in legs and hands, and by early-onset contractures (permanent shortening of a muscle or joint) of the hip, knee, and ankle.

  6. Hypotonia - Wikipedia

    en.wikipedia.org/wiki/Hypotonia

    "True muscle tone is the inherent ability of the muscle to respond to a stretch. For example, quickly straightening the flexed elbow of an unsuspecting child with normal tone, will cause their biceps to contract in response (automatic protection against possible injury). When the perceived danger has passed, (which the brain figures out once ...

  7. Congenital muscular dystrophy - Wikipedia

    en.wikipedia.org/wiki/Congenital_muscular_dystrophy

    CMD with brain-eye, also called muscle-eye-brain disease, [19] is a rare form of congenital muscular dystrophy (autosomal recessive disorder) causing a lack of normal muscle tone which can delay walking due to being weak, also paralysis of eye muscles and intellectual disability which affects an individual's way of processing information. [19]