This form of muscular dystrophy is similar to DMD because it is also caused by a mutation in the dystrophin gene, and therefore the clinical picture is similar. However, symptoms in BMD appear later and progress more slowly because dystrophin production is present, which is not the case in DMD. It usually occurs in males between the ages of 2 and 16, but can also occur in 25. In later development, it affects the heart.
The severity of the disease varies in individual patients depending on the amount of remaining dystrophin.
