Written by the Fiveable Content Team • Last updated August 2025
Written by the Fiveable Content Team • Last updated August 2025
Definition
Herpes simplex virus (HSV) is a double-stranded DNA virus that causes infections in humans, characterized by latent and recurrent infections. There are two main types: HSV-1 primarily causes oral herpes, while HSV-2 mainly causes genital herpes.