Cutaneous sarcoidosis developing after treatment with pegylated interferon and ribavirin: a new case and review of the literature

Sarcoidosis is a multisystem granulomatous disease that affects multiple organs in adults between 20 and 50 years old. Interferon alpha (IFN‐α) is an immunomodulator that has been used in a wide range of diseases, including hepatitis C virus infection, multiple sclerosis, and other types of neoplasias, including leukemia, lymphoma, Kaposi’s sarcoma, and melanoma. Standard IFN‐α‐induced sarcoidosis has been reported, but there are few reports of cutaneous sarcoidosis with pegylated IFN‐α therapy. We present a new case of cutaneous sarcoidosis after treatment with pegylated IFN, and a review of the literature.