Cat Chronic Upper Respiratory Disease Management

Many cats carry lifelong herpesvirus infection causing recurrent upper respiratory flares that require ongoing management to maintain quality of life.

Key Facts

Feline herpesvirus (FHV-1) infects most cats and establishes lifelong latency in nerve ganglia
Stress, illness, or immunosuppression triggers viral reactivation causing respiratory flares
Signs include sneezing, conjunctivitis, and nasal discharge recurring throughout life
L-lysine supplementation was previously recommended but lacks strong evidence of benefit
Famciclovir is an antiviral that reduces severity of FHV-1 flares in affected cats

Welfare Considerations

Cats with chronic herpesvirus disease experience recurring episodes of nasal congestion, eye discharge, and discomfort throughout their lives. Severely affected cats may develop chronic rhinitis causing year-round nasal congestion and reduced sense of smell that impairs appetite. Minimising stress triggers, maintaining good vaccination against secondary bacterial pathogens, and using antiviral therapy during flares improve welfare. Humidification and gentle nasal cleaning provide symptomatic relief during active episodes.

What You Can Do

Minimise stress for herpesvirus-positive cats to reduce reactivation frequency
Ensure your cat is vaccinated against secondary viral pathogens that worsen herpes flares
Discuss antiviral treatment with your vet for cats with frequent severe episodes
Use humidification and warm steam to ease nasal congestion during flares
Schedule veterinary assessment for any eye changes associated with herpesvirus flares