Background : The clinical study of Sweets syndrome has never been reported in Korea. Objective : The purpose of this study was to elucidate the clinical observations and associated diseases of Sweets syndrome. Methods : During a 5-year-period from Jan. 1990 to Dec. 1994, 32 patients were evaluated in regard to age incidence, sex ratio, location of skin lesions, and associated diseases. Results & Conclusions : 1, The age distribution was in the range of 21-70 years. Most patients were between 31 to 40 years of age. There were 12 male patients and 20 female giving a sex distribution of 1.7: 1 ratio in favor of the fernale. 2. The most cornmon site of iavolvement was the arm(37.5%). 3. ESR was increased in 21 patients(65.6%) and leukocytosis was present in 13 patients(40.6) 4. The most common associated disease was Behcets disease(31.2%). 5. Steroids were used mos frequently for treatment of Sweets syndrome with 12 patients(37.5%). Recurrence occurred in 7 patients(21.9%). The results show that the iniidence of Sweets syndrome in men in Korea is not as rre as was previously thought and tfiat there are many associated diseases especially Behcets disease. (Kor J Dermatol 1995;33(5): 907-913)