Chancre with Clinical Features of Ulcerative Paronychia
- Author:
Jung Eun YIM
1
;
Hyeong Mok KWON
;
Hye Ri KIM
;
Dong Hoon SHIN
;
Jong Soo CHOI
Author Information
1. Department of Dermatology, Yeungnam University College of Medicine, Daegu, Korea
- Publication Type:Case Report
- From:Korean Journal of Dermatology
2021;59(1):67-69
- CountryRepublic of Korea
- Language:English
-
Abstract:
Syphilis is a highly contagious sexually transmitted disease, and early diagnosis and prompt treatment significantly affect the prognosis. Syphilis usually presents with genital lesions in the early stages; therefore, extragenital syphilitic lesions can easily be misdiagnosed. A 20-year-old man presented with a 1-month history of a worsening hyperkeratotic black crusted ulcerative plaque on the right 4 th finger, with distorted periungual structures.Histopathological examination showed epidermal hyperplasia, mild endothelial swelling, and numerous plasma cells in the dermis. Excessive dermal infiltration of plasma cells suggested primary syphilis, which necessitated additional serological tests; the patient showed positive results on Venereal Disease Research Laboratory and Treponema pallidum hemagglutination testing. The lesion significantly improved after an intramuscular injection of 2.4 million units of benzathine penicillin G. We report a rare case of primary syphilis involving the finger in a patient with clinical features of ulcerative paronychia.
