Muscular dystrophy Symptoms – Mayo Clinic

The main sign of muscular dystrophy is progressive muscle weakness. Specific signs and symptoms begin at different ages and in different muscle groups, depending on the type of muscular dystrophy.

About half of people with muscular dystrophy have this variety. Although girls can be carriers and mildly affected, the disease typically affects boys.

About one-third of boys with Duchenne muscular dystrophy don't have a family history of the disease, possibly because the gene involved may be subject to sudden abnormal change (spontaneous mutation).

Signs and symptoms typically appear between the ages of 2 and 3, and may include:

Signs and symptoms are similar to those of Duchenne muscular dystrophy, but typically are milder and progress more slowly. Symptoms generally begin in the teens but may not occur until the mid-20s or even later.

Some types of muscular dystrophy are defined by a specific feature or by where in the body symptoms first begin. Examples include:

Seek medical advice if you notice signs of muscle weakness such as increased clumsiness and falling in yourself or your child.

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Muscular dystrophy Symptoms - Mayo Clinic