Haemophilus ducreyi, buboes

"This photograph shows that a chancroid infection has spread to the inguinal lymph nodes, which have enlarged forming buboes.

Caused by the sexually transmitted bacterium, Haemophilus ducreyi, in about half of the untreated chancroid cases, the lymph nodes in the groin develop into buboes that can enlarge until they burst through the overlying skin."

Content Providers(s): CDC/ Susan Lindsley