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Fig. 13.3 Typical numerous periocular papules in a patient with sarcoidosis. |
The most common cutaneous findings are small papules that may be skin-colored, red, violaceous, yellow-brown, brown, or hypopigmented. The surface is typically smooth but variable scale or umbilication may be present. Papules are most commonly found around eyelids, nasal alae and nasolabial folds, and malar and neck regions (Fig. 13-3). The second most common specific skin lesions are plaques that may assume an annular configuration. Like the papules, the plaques may be skin-colored, red, violaceous, yellow-brown, brown, or hypopigmented and the surface may be smooth or demonstrate variable scale. Plaques are usually more recalcitrant to therapy. Plaques with marked overlying vascular dilatation are termed
angiolupoid sarcoidal plaques. Uncommon types of specific cutaneous lesions include subcutaneous nodules, involvement of scars and tattoos, erythroderma, ulcerations, verrucous lesions, dystrophic nails, scarring alopecia, and pustular lesions.