Sarcoidosis in a preschooler with only skin and joint involvement.

Sarcoidosis is a multisystemic granulomatous disease of unknown etiology. It is relatively rare in children less than 15 years of age and especially in those less than 5-6 years of age. Sarcoidosis characteristically involves the skin, eyes, and synovial tissues in patients less than 5-6 years of age. We report a 3-year-old boy with sarcoidosis who had cutaneous findings with joint symptoms. Dermatologic examination revealed lichenoid, erythematous, 2-3 mm papules, some of them grouped, all over his extremities and trunk. There were symmetric swellings on his ankles and wrists without erythema or pain which did not interfere with function. However, until now, no eye involvement had been detected in the patient.