Multiple, reddish-brown papules coalescing over the right arm in a boy with<unk> <unk>  is an autosomal dominant genetic inflammatory disorder which affects the skin, eyes, and joints. It is caused by a mutation in the NOD2 (CARD15) gene. Symptoms usually begin before the age of 4, and the disease manifests as early onset cutaneous sarcoidosis, granulomatous arthritis, and uveitis.
Blau syndrome
Robinow syndrome
Cantú syndrome
Pallister–Hall syndrome
Poland syndrome
Gleich's syndrome
Cohen syndrome
Kenny-Caffey syndrome