1. Syphilitic onychia;Macleod;Proc R Soc Med,1910
2. Syphilis: Uncommon presentations in adults;Dourmishev;Clin Dermatol,2005
3. Syphilis;Peeling;Nat Rev Dis Primers,2017
4. The modern epidemic of syphilis;Ghanem;N Engl J Med,2020
5. 2018 STD Surveillance Report. Available from: https://www.cdc.gov/nchhstp/newsroom/2019/2018-STD-surveillance-report.html. [Last accessed on 2019 Oct 8].