Some symptoms consistent with<unk>  are: Individuals with this disorder typically experience progressive muscle weakness of the leg and pelvis muscles, which is associated with a loss of muscle mass (wasting). Muscle weakness also occurs in the arms, neck, and other areas, but not as noticeably severe as in the lower half of the body. Calf muscles initially enlarge during the ages of 5-15 (an attempt by the body to compensate for loss of muscle strength), but the enlarged muscle tissue is eventually replaced by fat and connective tissue (pseudohypertrophy) as the legs become less used (with use of wheelchair). Complications Possible complications associated with muscular dystrophies (MD) are cardiac arrhythmias.<unk>  <unk>  also demonstrates the following: * Mental impairment (less common in<unk>  than in DMD) * Pulmonary failure * Pneumonia
Becker muscular dystrophy
Limb–girdle muscular dystrophy
Fukuyama congenital muscular dystrophy
Duchenne muscular dystrophy
Ullrich congenital muscular dystrophy
Jokela type spinal muscular atrophy
Myotonic dystrophy
Distal spinal muscular atrophy type 2