Alternative Names
Glycogen storage disease type V; Myophosphorylase deficiency; Muscle glycogen phosphorylase deficiency; PGYM deficiency
Treatment:
There is no specific treatment, but the symptoms can be managed by controlling exercise and physical activity. For example, avoid excessive or intense exercise.
Support Groups:
For additional information and resources, visit the Association for Glycogen Storage Disease at www.agsdus.org.
Expectations (prognosis):
People with McArdle syndrome can live a normal life by managing their physical activity.
Complications:
Exercise may produce muscle pain, or even breakdown of skeletal muscle, a condition called rhabdomyolysis. This is associated with burgundy-colored urine and a risk for kidney failure, if severe.
Calling your health care provider:
Contact your health care provider if you have repeated episodes of sore or cramped muscle after exercise, especially if accompanied by burgundy or pink urine.
Consider genetic counseling if you have a family history of McArdle disease.