Chancroid is a
sexually transmitted disease, or STD, caused by the
bacteria Haemophilus ducreyi.
What is going on in the body?
Chancroid is an STD that is spread from one person to another through
vaginal, anal, or oral sex. About 3 to 10 days after exposure, a newly
infected person will develop a tender, red bump on the genitals. This bump,
known as a bubo, will evolve into a painful ulcer over the next 2 days. Over
half the people with chancroid have more than one ulcer.
What are the causes and risks of the infection?
Chancroid is a sexually transmitted disease. Risky sexual
behaviors, such as having more than one partner, increase the risk for
chancroid. For some reason, men are more
commonly infected with chancroid than women are. Individuals with immunodeficiency disorders, such as
HIV, are at higher risk
for chancroid. The risk is also higher in people who are receiving chemotherapy for cancer.