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A chancre (/ ˈ ʃ æ ŋ k ər / SHANG-kər) [1] is a painless genital ulcer most commonly formed during the primary stage of syphilis. [2] This infectious lesion forms around 21 days after the initial exposure to Treponema pallidum , the gram-negative spirochaete bacterium causing syphilis, but can range from 10 to 90 days. [ 2 ]
Chancre on a penis due to primary syphilis, 1978. Primary syphilis is typically acquired by direct sexual contact with the infectious lesions of another person. [19] Approximately 2–6 weeks after contact (with a range of 10–90 days) a skin lesion, called a chancre, appears at the site and this contains infectious bacteria.
The initial ulcer may be mistaken as a "hard" chancre, the typical sore of primary syphilis, as opposed to the "soft chancre" of chancroid. [citation needed] Approximately one-third of the infected individuals will develop enlargements of the inguinal lymph nodes, the nodes located in the fold between the leg and the lower abdomen. [citation ...
Syphilis is typically spread through direct contact with a syphilis sore, known as a chancre, during vaginal, anal or oral sex. It can also be passed from a pregnant person to a child during birth ...
Secondary syphilis. Syphilis is an STI caused by a bacterium. Untreated, it can lead to complications and death. [67] Clinical manifestations of syphilis include the ulceration of the uro-genital tract, mouth or rectum; if left untreated the symptoms worsen.
Genital herpes ulcers. A genital ulcer is an open sore located on the genital area, which includes the vulva, penis, perianal region, or anus. Genital ulcers are most commonly caused by infectious agents (fungal infections, secondary bacterial infections, or sexually transmitted infections such as genital herpes, syphilis or chancroid).
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