Case Report: Elevated CPK, an indicator of idiopathic inflammatory myopathy?

F1000Res. 2016 Feb 12;5:164. doi: 10.12688/f1000research.7681.1. eCollection 2016.


Polymyositis is a rare disease with incidence rates at about 1 per 100,000 people annually. In this case report we will review a case of proximal muscle weakness with an elevated creatine phosphokinase that was initially misdiagnosed twice as rhabdomyolysis. Therefore, emphasizing that idiopathic inflammatory myopathy is a potential cause of myasthenia that must be considered in the differential. The case will also describe the current treatment and treatment response in polymyositis.

Keywords: Idiopathic inflammatory myopathy; Myasthenia; Polymyositis.

Grant support

The author(s) declared that no grants were involved in supporting this work.