Return to Syphilis Pictures from CDC | Hardin MD : Syphilis
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This image shows an extensive chancre located on the penile shaft due to a primary syphilitic infection caused by Treponema pallidum bacteria.
The primary stage of syphilis is usually marked by the appearance of a single sore called a chancre. The chancre is usually firm, round, small, and painless. It appears at the spot where T. pallidum bacteria entered the body, and lasts 3-6 weeks, healing on its own.
Content Providers(s): CDC/Susan Lindsley, VD