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.
HSV-1 is the main cause of herpes infections on the mouth and lips, including cold sores and fever blisters. It is transmitted through kissing or sharing drinking glasses and utensils. HSV-1 can also cause genital herpes, although HSV-2 is the main cause of genital herpes.HSV-2 is spread through sexual contact.n between herpes outbreaks, the virus lies dormant (as if it is hibernating or sleeping) in nerve cells. Exposure to HSV-1 is extremely common -- as many as 90% of American adults have been exposed to the virus -- and there is no stigma to having a cold sore. However, HSV-2, or genital herpes, can cause embarrassment.