(medicine) A viral infection, caused by Human alphaherpesvirus 1 and Human alphaherpesvirus 2, marked by painful, watery blisters in the skin or mucous membranes or on the genitals.

plural of herp

(colloquial) Herpes.

(colloquial) A reptile or amphibian.

(hypercorrect, humorous) A herpes infection.

(pathology) An acute viral inflammation of the sensory ganglia of spinal and cranial nerves associated with a vesicular eruption and neuralgic pains, caused by reactivation of the Human herpes virus 3, in genus Varicellovirus, that also causes chicken pox as primo-infection.

(science fiction, ufology, fandom slang, slang) A generic disease found in space, especially one transmissible by sexual encounters.

(pathology) A viral disease caused by Human herpesvirus 1 or Human herpesvirus 2 in genus Simplexvirus.

(pathology) A genital infection caused by herpes simplex viruses (mostly HHV2 but also HHV1).

(medicine) Herpangina.