What's to know about eczema herpeticum? Eczema herpeticum occurs when the herpes virus meets an area of skin that is affected by herpes. This MNT Knowledge Center feature introduces eczema, the herpes simplex virus, and how they combine to produce the effects of eczema herpeticum. Learn also about the treatments available and how it may be prevented. Read now

At least 80 to 90 percent of people in the U.S. have already been exposed to the HSV-1 virus.sup style="font-size: 10px;">21 Meanwhile, around 3.7 billion HSV-1 infections were recorded in 2012 all over the world, according to the World Health Organization. Africa was home to the highest number of cases, with 87 percent of occurrences coming from this continent.22
People who have had HSV-1 are less likely to contract HSV-2 than those who have not. Previous exposure to HSV-1 also decreases the severity of an HSV-2 outbreak. Reoccurrence of the virus is common, and the virus can be active yet asymptomatic. These infections are more likely to be contracted since the person isn’t aware the virus is active. Studies have shown that 50 percent of the cases of sexual transmission of the virus occurred during asymptomatic infections.
Herpes type 2 (HSV-2) can cause genital herpes. This is one of the most common sexually transmitted infections (STIs) in the US. It causes sores or painful blisters on the penis, vagina, scrotum, anus and buttocks. Along with blisters, people with HSV-2 may experience tingling, itching or pain. Like HSV-1, HSV-2 infections are highly contagious. They can be spread easily through skin-to-skin contact. Sexual intercourse is the main route of transmission.
Avoid touching any sores you have. If you do, wash your hands with soap and water. You should avoid sex while you have sores, and use a male or female condom or dental dam with your partner if sex occurs despite intentions to not have sex. Herpes is most contagious during an outbreak, but it’s also possible to spread herpes when no symptoms are present.
Some people have recurrent outbreaks with the so-called “classic” blister-like herpes lesions that crust over, or with painful sores. In recurrent herpes, however, this process usually takes about half the time it does in first episodes. In addition, many people have very subtle forms of recurrent herpes that heal up in a matter of days. And lastly, herpes is capable of reactivating without producing any visible lesions (asymptomatic reactivation).
The annual incidence in Canada of genital herpes due to HSV-1 and HSV-2 infection is not known (for a review of HSV-1/HSV-2 prevalence and incidence studies worldwide, see Smith and Robinson 2002). As many as one in seven Canadians aged 14 to 59 may be infected with herpes simplex type 2 virus[85] and more than 90 per cent of them may be unaware of their status, a new study suggests.[86] In the United States, it is estimated that about 1,640,000 HSV-2 seroconversions occur yearly (730,000 men and 910,000 women, or 8.4 per 1,000 persons).[87]

A scary finding is that more cases of genital herpes than ever before are now being caused by HSV-1 (the type most people assume only causes mouth sores), and about 85 percent of people with genital herpes don’t even know it. (7) Studies show that about 50 percent of the new genital herpes infections in young adults are due to HSV-1 and about 40 percent in older adults. The fact that most people don’t ever find out they’re infected is one of the reasons that transmission rates are steadily climbing.

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