Pruritic maculopapular rash occurred in a 23-year-old black man. The lesion remained undiagnosed and required frequent hospital admissions. Twenty years after the onset of symptoms, the skin and lymph node biopsy specimens showed noncaseating granulomas. Sarcoidosis should always be included in the differential diagnosis of pruritic skin lesion.
Fong YW, Sharma OP. Pruritic Maculopapular Skin Lesions in SarcoidosisAn Unusual Clinical Presentation. Arch Dermatol. 1975;111(3):362-364. doi:10.1001/archderm.1975.01630150082010