[A typical myofascial pain syndrome, or perhaps not? : Rare differential diagnosis]

A 55-year-old male patient presented with generalized myofascial complaints. The clinical and laboratory investigations were unremarkable apart from taut skin of the lower extremities and eosinophilia of the blood. Based on the enrichment of the fascias seen in magnetic resonance imaging (MRI) and the detection of inflammatory epifascial infiltrates in the muscle biopsy, the diagnosis of eosinophilic fasciitis was made. Treatment with glucocorticoids, methotrexate and tocilizumab led to a complete clinical and morphological regression of the fasciitis.