Companion Animal Welfare

Cat FHV Feline Herpesvirus Management

Long-term management of feline herpesvirus infection and the welfare of chronically affected cats.

Key Facts

FHV-1 infects most cats, establishing latent infection that reactivates under stress
Clinical signs include conjunctivitis, nasal discharge, and corneal ulcers - painful and recurrent
L-lysine supplementation has limited evidence and is no longer routinely recommended
Antiviral therapy (famciclovir) is effective for severe cases; topical antivirals for corneal disease

Welfare Considerations

FHV reactivation causes recurrent painful episodes that significantly affect quality of life for chronically affected cats. Stress reduction is the most important long-term management tool, as each reactivation represents both suffering and further damage. Antiviral treatment during flares provides meaningful welfare relief.

What You Can Do

Minimise stress triggers in the environment of FHV-positive cats
Consult a vet about famciclovir treatment during severe or corneal FHV episodes
Ensure FHV-positive cats in multi-cat environments have adequate space and resources