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Herpes simplex virus
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Herpes simplex virus comes in two types, HSV-1 and HSV-2. HSV-1 usually spreads through oral contact and causes herpes around the mouth, although it can also reach the genitals. HSV-2 usually spreads through sexual contact and causes genital herpes.
After entering the body, the virus remains inside nerve cells. Picture a switch moving between off and on: the virus can stay inactive and later reactivate. That is why herpes simplex can return without being a new infection.
In brief
Herpes simplex virus has two types, HSV-1 and HSV-2. HSV-1 spreads mainly through oral contact and usually causes herpes around the mouth, although it can also affect the genitals. HSV-2 spreads through sexual contact and usually causes genital herpes.
After infection, HSV remains inside nerve cells and alternates between inactive and active phases. This persistence explains why lesions can return: the virus can reactivate without the episode representing a completely new infection.
Sources (1)
- World Health OrganizationHerpes simplex virusPublished
This page explains the topic in general terms; it does not tell anyone what treatment to follow.
Updated