Clinical, dermoscopy and ultrasonography findings in nail sarcoidosis: a case report

Although dermatological manifestations are frequent in sarcoidosis, nail involvement is rare and is related to chronic systemic disease. We present the case of a young female patient with significant nail involvement, highlighting the findings obtained by dermoscopy and high-resolution ultrasound. Cutaneous sarcoidosis is a granulomatous disorder with highly variable manifestations which poses a diagnostic challenge to all dermatologists. Diagnostic imaging, in particular ultrasound with color Doppler flow analysis, offers an inexpensive and widely accessible alternative to evaluate each component of the nail unit.