Related Experiment Videos
Focal eosinophilic myositis
Y Kobayashi1, T Fujimoto, H Shiiki
1First Department of Internal Medicine, Nara Medical University, Japan.
Clinical Rheumatology
|October 20, 2001
Summary
Idiopathic hypereosinophilic syndrome (HES) can manifest as focal eosinophilic myositis, causing muscle swelling and weakness. Corticosteroids effectively treated this uncommon HES complication in a reported case.
Area of Science:
- Rheumatology
- Neurology
- Hematology
Background:
- Idiopathic hypereosinophilic syndrome (HES) is a rare disorder characterized by persistent eosinophilia and organ damage.
- Focal eosinophilic myositis is an infrequent but significant manifestation of HES.
Observation:
- A patient presented with tender muscle swelling and proximal weakness in the lower limbs.
- Clinical presentation lacked systemic symptoms and muscle atrophy.
- Muscle biopsy revealed acute myositis with significant eosinophil infiltration.
Findings:
- Electromyography confirmed myositis.
- The patient showed an excellent clinical and biochemical response to corticosteroid therapy.
- A relapse occurred due to insufficient steroid dose reduction but responded well to treatment.
Implications:
- This case highlights focal eosinophilic myositis as a treatable HES manifestation.
- Early diagnosis and appropriate corticosteroid management are crucial for HES-related myositis.
- Further research into HES subtypes and targeted therapies is warranted.