Evidence-based information about cat feline herpesvirus: management of chronic respiratory disease for animal welfare improvement.
Cats with active FHV-1 experience painful corneal ulceration, nasal discharge, and conjunctivitis that significantly impairs welfare. Stress is the primary trigger for recurrence - environmental stressors including new pets, house moves, and owner changes should be minimised in FHV-positive cats. L-lysine supplementation and antiviral eye drops can reduce recurrence severity.