Susan's KWS Page Symptoms of SMA type III, often called Kugelberg-Welander disease,which is a rare inherited disorder that appears between the ages of two and adulthood, and may include abnormal gait, limited walking ability, difficulty with activities such as running, climbing steps, or jumping, difficulty getting up off the ground after falling and a fine tremor in the outstretched fingers, and loss of reflexes.
Weakness is usually static, but can also be slowly progressive or lessen with age.
Usually a normal life span, but long term survival usually depends upon the respiratory function. My Life With KWS I was born in England in February 1964 and was a crumpled baby. I couldn't hold up my head until I was over 6 months old and couldn't walk until 22 months. I was great at snowplowing. This accident unfortunately precipitated a lot of problems.