Chancroid

**Definition:** A disease caused by an infection with the gram-negative bacteria Haemophilus ducreyi. This disease is characterised by painful ulcer(s) on the genitalia. Transmission is by sexual contact. Confirmation is by identification of Haemophilus ducreyi from the ulcer exudate.

**Long definition:** Acute, localized autoinoculable infectious disease usually acquired through sexual contact and caused by Haemophilus ducreyi.

**Inclusions:** - Ulcus molle