Cellulitis is an infection of the deeper subcutaneous layers of the skin with a classic set of signs and symptoms including redness, pain, and warmth, and swelling. (The picture of cellulitis affecting a person’s left leg above shows the redness and swelling, as well as evidence of a bandaged wound on the great toe.)
Cutanea larva migrans is skin condition caused by infection with a parasitic worm.
Chancroid is a sexually transmitted disease caused by the organism Haemophilus ducreyi – a bacteria. The hallmark of this disease is an exquisitely painful ulcer on the genitals.