Herpes simplex virus (HSV)
Herpes simplex virus types 1 and 2 are members of the herpes virus family similar to chickenpox, cytomegalovirus and epstein bar virus. Once infected with any member of herpes virus it stays in your body through life, but most times it does not cause any problem. HSV 1 and 2 are the type of the viruses that can cause blisters and sores in different areas of the body.
- HSV 1 generally causes cold sores in the mouth or on the lips. It can be passed from one person to another through oral secretions or sores on the skin of an infected individual. Many people have had HSV1 even if they never had a blister
- HSV type 2 is associated with genital sores. It is usually passed during sexual contact with an infected individual
Children who have had a kidney transplant can acquire both types of herpes virus, but cold sores due to HSV 1 are more common. The sores may be painful and filled with fluid. In more serious cases, they can be linked with symptoms such as fatigue, fever or body aches.