Abstract
We herein report a case of a 49-year-old male presenting with Sweet's disease whose chief complaints were sore throat and oral pain. Multiple areas of stomatitis were found in the oral cavity and throat. We initially suspected Behcet's disease because eruption on the neck, chest and back were found. In addition, antibiotics were ineffective in spite of administering high level CRP and leukocytosis. We therefore asked a dermatologist to examine the patient and Sweet's disease was consequently established based on the findings of a skin biopsy. Sweet's disease and Behcet's disease are similar to each other regarding their symptoms and signs, and sometimes they may even occur simultaneously. Moreover, the treatment for these two diseases is almost the same. However, a careful differential diagnosis is important since Sweet's disease may sometimes be complicated with malignant tumors and myeloid metaplasia
