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.
Usually, HSV-1 causes cold sores in the mouth or face, and herpes simplex virus type 2 (HSV-2) causes lesions in the genital area, resulting in genital herpes. But sometimes, HSV-1 can cause genital lesions as well, especially if someone has received oral sex from an infected partner.