Chancroid is an infectious disease caused by the bacterium Haemophilus ducreyi. It can be sexually transmitted and manifests itself in the form of ulcerative lesions of the genital organs, as well as the skin and mucous membranes. Chancroid gets its name from the Latin word “mollis” (soft) because its manifestations are usually mild and may go unnoticed or cause discomfort only in rare cases. Although chancroid is caused by a common bacterial infection, it can pose a serious threat to the health and even life of patients, especially if it is transmitted through blood. In this article we will talk about the causes, symptoms and treatment of chancroid.