Chancre

Chancre is a type of skin lesion caused by the bacterium Treponema pallidum. It is a symptom of a sexually transmitted infection (STI) known as syphilis. It typically appears as a single hard, painless, non-itchy, raised lesion that is usually found on the genitals, rectum, or mouth. The chancre usually appears within one to three weeks of exposure to the bacteria and can last for about three to six weeks before spontaneously healing. The medical chancre is caused by Treponema pallidum, a spiral-shaped bacterium. The bacteria enters the body through breaks in the skin or mucous membranes, such as those caused by intercourse or oral sex. Once inside the body, the bacteria begins to multiply, causing the formation of the chancre. The lesion is usually circular in shape and can range from 1-2 cm in size. It is usually firm, raised, and painless. It may appear pale, red, or dark in color. The chancre is usually the first symptom of syphilis, and it is important to seek medical treatment as soon as possible. If left untreated, syphilis can lead to severe complications, including cardiovascular and neurological damage. Treatment typically includes antibiotics, such as penicillin, to treat the infection. It is important to inform any sexual partners of your diagnosis and encourage them to be tested for syphilis as well.