Causes
Chronic damage to the nasal lining, often following a herpesvirus or calicivirus infection. Bacteria take advantage of the damaged tissue.
Diagnosis
Examination, and sometimes rhinoscopy or imaging to assess the damage and rule out other causes.
Treatment
It is managed rather than cured: nasal flushes, antibiotics during flare-ups, anti-inflammatories, and a humid environment. Improving quality of life is the goal.
Prevention
Vaccination, and treating cat flu properly so that it does not become chronic.

