Types And Treatments For Spinal Muscular Atrophy

Type 3

Spinal muscular atrophy type 3 is considered a more mild form of the disease. However, it still has serious and permanent effects on a patient's life. About one in every 375 thousand individuals is estimated to have this condition, making it one of the rarer manifestations. To be diagnosed with spinal muscular atrophy type 3, the symptoms must develop after a child reaches one year old. Most patients with this condition develop their symptoms somewhere from childhood to adolescence. Another requirement for diagnosis is that the symptoms develop after an individual has begun to walk.

Some researchers believe there are two subtypes to this form of spinal muscular atrophy. The first subtype focuses on patients whose symptoms begin before they reach three years old, while the second applies to individuals whose symptoms begin after three years old. Sometimes the first noticeable symptoms are struggles to run, walk, or move up the stairs. Muscle weakness tends to affect the hips and the legs, but it then progresses to the arms and shoulders.

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