Coexisting Juvenile Dermatomyositis and Sickle Cell Disease: Maintaining a High Degree of Suspicion.

Juvenile dermatomyositis is an idiopathic inflammatory myopathy of childhood not previously described in a patient with sickle cell disease. We present a case of an 11-year-old girl with sickle cell disease who was diagnosed subsequently with juvenile dermatomyositis, and highlight the diagnostic and therapeutic challenges of these concurrent chronic diseases.