genital herpes

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A highly contagious, sexually transmitted viral infection of the genital and anal regions caused by herpes simplex and characterized by small clusters of painful blisters.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun an infection caused by herpes simplex virus type 2 (HSV-2) that is usually transmitted by sexual contact; marked by recurrent attacks of painful eruptions on the skin and mucous membranes of the genital area