DefinitionChancroid is a bacterial disease that is spread only through sexual contact.Causes, incidence, and risk factorsChancroid is caused by a type of bacteria called Haemophilus ducreyi.The disease is found mainly in developing and third world countries. Only a small number of cases are diagnosed in the United States each year. Most people in the U.S. diagnosed with chancroid have traveled outside the country to areas where the disease is known to occur frequently.Uncircumcised men are at much higher risk than circumcised men for getting chancroid from an infected partner. Chancroid is a risk factor for the HIV virus.SymptomsWithin 1 day - 2 weeks after getting chancroid, a person will get a small bump in the genitals. The bump becomes an ulcer within a day of its appearance. The ulcer