The herpes virus causes a typical rash in the genital area and also causes fever blisters (cold sores). This gallery shows pictures of typical herpes rashes. Blood Blisters Causes. Blood blisters normally develop following a sudden force that is intense for example hard pinch of the skin instead of the slow application of. Lip blisters are also called as fever blisters or cold sores. It is contagious and is passed on to another person through saliva or sharing glasses. Several antiviral drugs are effective for treating herpes, including acyclovir, valaciclovir (valacyclovir), famciclovir, and penciclovir. Acyclovir was the first. Typical Herpes Symptoms The virus starts to multiply when it gets into the skin cells. The skin becomes red and sensitive, and soon afterward, one or more blisters or. Fever blisters which are also known as cold sores are small blisters in groups that develop around the mouth as well as the lips. Skin surround these blisters are. Find WebMD's comprehensive coverage of fever blisters, including medical reference, news, pictures, videos, and more. std pictures learn std by looking at std pictures, std photos •Cold Sores Cold sores (fever blisters, oral herpes) are also caused by the herpes simplex virus. Once a person has been exposed to the herpes simplex virus, the. How do I get Oral Herpes or Cold Sores? Sexual contact (oral to oral, vaginal, or anal) is very risky during the prodromal stage, or the time before the blisters appear.