Symptoms usually occur within four days to ten days from exposure. ... The ulcer begins as a tender, elevated bump, or papule, that becomes a pus-filled, open sore with eroded or ragged edges. The ulcer is soft to the touch (unlike a syphilis chancre that is hard or rubbery).

Chancroid is a bacterial sexually transmitted disease (std) caused by infection with haemophilus ducreyi. It is characterized by painful necrotizing genital ulcers that may be accompanied by inguinal lymphadenopathy. It is a highly contagious but curable disease.