What is herpes (HSV)?
Herpes is a sexually transmitted disease. It is caused by the herpes simplex virus
(HSV). Herpes infections can cause blisters and ulcers on the mouth or face (oral
herpes), or in the genital area (genital herpes). HSV is a life-long infection.
Symptoms of genital herpes
Symptoms of genital HSV may include painful blisters or open sores in the genital
area. Before these symptoms appear, a tingling or burning sensation may be felt in
the legs, buttocks, or genital region. The herpes sores usually disappear within a
few weeks, but the virus remains in the body. The lesions may return from time to
How does genital HSV affect pregnancy?
It is important that women avoid contracting herpes during pregnancy. A first episode
during pregnancy creates a greater risk of spreading it to the newborn. Women may
be treated with an antiviral medicine, like acyclovir, if the disease is severe. Genital
herpes can cause potentially fatal infections in babies if the mother has active genital
herpes (shedding the virus) at the time of delivery. Cesarean delivery is usually
recommended for active genital herpes. Fortunately, infection of an infant is rare
among women with genital herpes infection.
Preventing transmission of herpes
It is important not to have sex when symptoms of active herpes are present. Using
latex condoms between outbreaks is also recommended.