A sexually transmitted infection caused by Neisseria gonorrhoeae, a species of bacteria (the gonococcus) that affects the mucous membrane of the genital and urinary tracts.
An infestation of parasitic mites, Sarcoptes scabiei, causing intense itching caused by the mites burrowing into the skin of humans and other animals. It is easily transmissible from human to human; secondary skin infection may occur.