| epidemic leg ulcers in thailand. | in 1981, two outbreaks of chronic leg ulcers occurred in central thailand and affected thousands of persons. the lesions were characterized by granulomatous bases with erythematous edges and purulent slough. they were about 1 cm in diameter with irregular shapes. the ulcers lasted two weeks to one month. ninety percent of the lesions were found on the lower extremities. the outbreak in nakorn pathom province occurred in fruit yards. most of patients were gardeners and students. the outbreak in r ... | 1982 | 7170638 |