If there is a bulge in something, there is a sudden large increase in it. ...a bulge in aircraft sales. ...the huge bulge of payments due over the next two years. Synonyms: increase, rise, boost, surge More Synonyms of bulge.
Two types of herpes simplex virus infections can cause genital herpes: 1  HSV-1. 2  This is the type that usually causes cold sores or fever blisters around your mouth, though it can be spread to your genital area during oral sex. 3  Recurrences are much less frequent than they are with HSV-2 infection.
Herpes simplex type 1 (HSV-1), herpes simplex type 2 (HSV-2) HSV-1 is a virus that usually causes cold sores or fever blisters around the mouth, but it can also cause similar blisters anywhere on the body above the waist. HSV-2, also a virus, usually causes genital sores or blisters. Both forms of herpes can be passed on during skin-to-skin contact.