SMA type 1 (severe SMA): About 60% of SMA cases are type 1 — also called Werdnig-Hoffman disease. Symptoms arise within the first six months of life and include limited head control and …

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 …

Jul 30, 2024 · Spinal muscular atrophy (SMA) refers to a group of hereditary diseases which affect motor neurons.

Jan 8, 2024 · Learn about SMA type 1, including its causes, risk factors, symptoms, and outlook.

Dec 1, 2025 · Type 1 spinal muscular atrophy (SMA), also called infantile-onset SMA or Werdnig-Hoffmann disease, is the most common form of SMA, accounting for about 60% of cases. …

SMA type 1 (infantile-onset SMA or Werdnig-Hoffman disease): This is the most severe kind of SMA and strikes infants within the first six months of life. Some children with SMA type 1 will …

3 days ago · SMA type 1, also known as infantile-onset spinal muscular atrophy or Werdnig–Hoffmann disease, is the most severe and common form of spinal muscular atrophy. …

When SMA symptoms are present at birth or by the age of 6 months, the disease is called SMA type 1 (also called infantile onset or Werdnig-Hoffmann disease). Babies typically have …

Spinal muscular atrophy is a genetic disorder characterized by weakness and wasting (atrophy) in muscles used for movement (skeletal muscles). It is caused by a loss of specialized nerve …

Spinal muscular atrophy (SMA) is a rare genetic condition that can cause muscle weakness. It gets worse over time, but there are medicines and other treatments to help manage the …