Induction of vitiligo after imiquimod treatment of condylomata acuminata
1 Department of Dermatology, Qianfoshan Hospital, Shandong University, 16766# Jing-Shi Road, Jinan 250014, China
2 Shandong Provincial Chest Hospital, Jinan 250013, China
3 Taishan Medical college, Tai’an 271000, China
4 Department of Dermatology, Jinan city central Hospital, Jinan 250013, China
5 Department of Dermatology, Jinan Sixth People’s Hospital, Jinan 250200, China
BMC Infectious Diseases 2014, 14:329 doi:10.1186/1471-2334-14-329Published: 13 June 2014
Condylomata acuminata (genital warts) is the most common sexually transmitted disease, and imiquimod is the sole FDA-approved medication for combating this condition. Vitiligo associated with imiquimod treatment of condylomata acuminata is rare.
A 28-year-old male with condylomata acuminata of the penis presented to our clinic. After removing his condylomata acuminata, we advised him to use imiquimod 5% cream to prevent relapse. When he presented to our clinic again about 12 weeks later, he complained of vitiligo patches on his penis and scrotum. Physical examination showed vitiligo patches involving the glans penis, shaft of the penis, and scrotum, and remaining pigmented areas within the plaques of vitiligo.
A skin biopsy of the dorsal surface of the penis showed a complete absence of melanocytes and melanin granules in the basal layer; the dermis was normal.
This is the first report of a case of imiquimod-induced vitiligo diagnosed by histopathological examination. This adverse effect should be considered when dermatologists prescribe this medication.