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biological

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Kugelberg–Welander disease

Kugelberg–Welander disease Kugelberg–Welander disease is a rare inherited disorder, also known as spinal muscular atrophy type 3, in which degeneration of motor nerve cells in the spinal cord and brain stem leads to low muscle tone and progressive muscle weakness.

Kugelberg–Welander disease is a rare inherited disorder, also known as spinal muscular atrophy type 3, in which degeneration of motor nerve cells in the spinal cord and brain stem leads to low muscle tone and progressive muscle weakness. It usually appears in late childhood or adolescence, and although affected people can stand and walk, walking and climbing stairs become increasingly difficult over time.