Unistat : herpes simplex
http://www.kidshealth.org/parent/infections/std/herpes.html
Types of Herpes Infections
Cold sores around the mouth are usually caused by HSV1. This form of the virus is usually transmitted from person to person by saliva or direct contact, like kissing or sharing eating utensils.
In this form of herpes, blisters form on the lips and on the inside of the mouth, and soon develop into painful ulcers. The gums become red and swollen, and the tongue may develop a white coating. Other symptoms may include fever, muscle aches, eating difficulties, a generally ill feeling, irritability, and swollen neck glands. These symptoms can last from 3 to 2 weeks.
After the first herpes infection, the virus can lie dormant without causing any symptoms for some time. But the virus can reactivate at a later time, leading to a tingling and numbness around the mouth, then a blister that breaks and forms a crust. The virus tends to reactivate following some type of stress on the body, like a cold, an infection, hormone changes, menstrual periods, or even a tooth extraction.
Genital herpes is usually caused by HSV2. This form of the virus occurs mainly in sexually active teens and adults and is transmitted through intimate contact.
Symptoms typically begin with pain, tenderness, or itching in the genital area and also include fever and headache.
In males, blisters appear on the penis. In females, blisters appear on the area around the vagina and in the cervix. In both genders, the blisters may appear on the thighs and buttocks. Blisters soon erupt to form painful sores that last 1 to 3 weeks.
Other symptoms may include: pain or a burning sensation during urination; a clear mucus-like discharge from the vagina or urethra (opening for urine) in females; a clear mucus-like discharge from the tip of the penis in males; and tender, swollen glands in the groin area.
As with HSV1, after an initial outbreak of genital herpes blisters, HSV2 also remains dormant in nearby nerves and can be reactivated later in life. The symptoms of reactivated genital herpes are similar to those of first outbreak, but they're generally less severe.