There are treatments that reduce the frequency and severity of outbreaks, such as Valtrex (valacyclovir hydrochloride), but they can't do anything about the latent infection in the nervous system.

However! Targeted gene-editing to remove or disrupt latent viral genomes infecting human cell cultures has shown some promise, although it hasn't progressed to testing in animal models, much less an in-vivo clinical trial, just yet:

https://scholar.google.com/scholar?cites=7885240874375341470

Also:

https://www.sciencedirect.com/science/article/pii/S095279151...