Progressive Contractures due to Eosinophilic Fasciitis in a 17 year old Male


Eosinophilic fasciitis (EF) is a multi-system, inflammatory disorder of uncertain aetiology, typically characterised by cutaneous abnormalities mimicking scleroderma. A purely musculoskeletal syndrome at onset has rarely been reported. Here we describe a case of EF presenting with advanced painless joint contractures and normal skin examination.

A 17-year-old white male was referred for specialist evaluation due to difficulty walking. His symptoms began eight weeks prior with mild, bilateral, distal leg discomfort, followed by stiffness and inability to fully extend his knee and elbow joints. Previous medical history was unremarkable. He had consumed creatine monohydrate to aid muscle growth for sports two months prior to symptom onset but otherwise took no regular medications. On examination he was noted to toe-walk with symmetrical joint contractures involving ankles, knees, hips, shoulders, elbows and fingers. He exhibited a positive prayer sign indicating limited joint mobility in his fingers. There were no skin abnormalities. Laboratory investigations revealed an eosinophilia of 5.68 x 109/L and C-reactive protein was elevated at 38 mg/L. Creatinine kinase was within normal limits and serum autoantibodies were negative. MRI of femur demonstrated oedema and abnormal enhancement along all of the fascial planes surrounding the pelvic and thigh muscles. Skin, fascial and muscle biopsy demonstrated dense chronic inflammatory cell infiltrate affecting the perimysial connective tissues with abundant eosinophils. He was initially treated with methylprednisolone one gram intravenously for five days followed by 1mg/kg/day oral prednisolone which was tapered. Subsequently, weekly methotrexate was added as a steroid-sparing agent and intermittent intravenous immunoglobulin (IVIG) infusions were administered. At 6 months from treatment initiation joint contractures were reduced by over 95%.

The mean age of onset of EF is typically between 40 and 50 years with both sexes equally affected1. Potential triggers for the disease include intense physical exertion and L-tryptophan use2. To our knowledge, creatine monohydrate supplementation has not previously been reported as an aetiologic factor and it is unclear whether it or undefined supplement contaminants contributed to disease pathogenesis here. Flexion contractures occur in up to 56% of EF cases3 but painless contractures have rarely been reported4,5. A scleroderma-like illness is more typical with skin induration being a feature in all patients in one case series1. Thyroiditis, peripheral neuropathies and haematological disorders can also be found in association with EF6.  Blood eosinophilia occurs in approximately 63% of patients with EF. MR with gadolinium enhancement is the imaging modality of choice, showing increased signal in the subcutaneous and deep fascia7. Incisional biopsy typically demonstrates infiltration of subcutis and deep fascia with lymphocytes, plasma cells, histiocytes and eosinophils. Sclerosis ensues with disease progression8. Our patient showed a favourable response to combined corticosteroids, methotrexate and IVIG, in keeping with the experience of others9. This case highlights that EF should be considered in both young and older patients presenting with painless contractures even when skin examination is normal.

C Kirby, M Marnane, N Bermingham, B Sweeney, 
Neurology Department, Cork University Hospital, Wilton, Cork

Email: [email protected]


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