Eosinophilic enteritis with systemic lupus erythematosus.

Gastrointestinal manifestations are common in systemic lupus erythematosus (SLE). Eosinophilic enteritis is a rare disorder of uncertain cause that was recently reported for the first time in association with SLE. This report presents a second case of eosinophilic enteritis in a 47-year-old female patient with SLE. The patient presented with recurrent episodes of abdominal pain, nausea, vomiting, and diarrhea. Complete blood counts on occasion showed elevated eosinophil counts. The patient underwent a comprehensive workup over several weeks, culminating in a small bowel biopsy that showed eosinophil infiltration in the muscularis propria, establishing the diagnosis. The patient was treated with a prolonged taper of prednisone with successful resolution of symptoms.