SYMPTOM
Sneezing (chronic or frequent)
Repeated bouts of sneezing that persist beyond a few days or recur regularly, sometimes producing nasal discharge or occurring in paroxysms.
Viral Upper Respiratory Infection
Chronic or recurrent sneezing in cats is most commonly associated with feline herpesvirus-1 infection, which establishes lifelong latent infection in the trigeminal ganglia and reactivates periodically. Each reactivation episode may produce sneezing, nasal discharge, and conjunctivitis. Feline calicivirus can also contribute to chronic upper respiratory signs, though it more commonly causes oral ulceration alongside respiratory symptoms.
Chronic Rhinosinusitis
Persistent or recurrent sneezing may reflect chronic inflammation of the nasal passages and sinuses, often developing as a long-term sequel to acute viral infection. Damage to the nasal turbinates and mucociliary apparatus creates conditions favourable for ongoing bacterial colonisation, which perpetuates the inflammatory cycle and drives recurrent sneezing episodes.
Allergic or Inflammatory
Chronic sneezing may in some cases reflect sensitivity to inhaled allergens such as dust, pollen, or household irritants. Allergic rhinitis in cats is less well characterised than in humans but may present with chronic sneezing, clear nasal discharge, and nasal irritation that follows seasonal or environmental patterns.
Nasal Foreign Body
A foreign object lodged in the nasal passage — such as a grass seed or plant material — can produce persistent unilateral sneezing, often with discharge from the affected nostril. The sneezing may be particularly intense initially and then settle into a chronic pattern as the foreign material becomes embedded in the nasal mucosa.
Nasal Neoplasia
Tumours within the nasal passages can produce chronic sneezing that may be accompanied by nasal discharge, sometimes blood-tinged. Nasal lymphoma is the most common nasal tumour in cats. The sneezing from nasal tumours tends to be progressive and may eventually be accompanied by facial deformity or airflow obstruction.
Dental Disease
Severe dental disease, particularly involving the upper canine and premolar teeth, can create oronasal fistulae — communications between the oral cavity and the nasal passages. These fistulae allow food material, water, and oral bacteria to enter the nasal passages, producing chronic sneezing, nasal discharge, and secondary rhinitis.
Why timing matters
Early observation
When chronic sneezing first becomes apparent, it may present as an increase in the frequency of sneezing episodes compared to the cat's normal baseline, or as sneezing that persists beyond the expected duration of an acute upper respiratory infection. Early chronic sneezing may be intermittent, occurring in clusters separated by days or weeks of relative normalcy. The discharge produced may be clear or slightly cloudy, and the cat may otherwise appear well between episodes.
Later presentation
As the underlying process progresses, sneezing may become more frequent, more intense, and associated with thicker or coloured nasal discharge. The cat may show visible discomfort during sneezing episodes, with some cats producing blood-tinged discharge during particularly violent paroxysms. Chronic nasal congestion may affect appetite and breathing patterns, and the cat may become more withdrawn or less active during prolonged episodes.
The trajectory of chronic sneezing depends substantially on its cause. Viral-associated chronic rhinosinusitis typically follows a relapsing-remitting course, with episodes triggered by stress or immunosuppression alternating with periods of relative quiescence. Allergic causes may follow seasonal patterns. Foreign bodies tend to produce persistent unilateral signs that do not resolve spontaneously. Neoplastic causes typically produce slowly progressive signs that worsen over weeks to months without remission periods.
Conditions commonly associated
Chronic Upper Respiratory Disease in Cats
Chronic upper respiratory disease is the most common cause of persistent or recurrent sneezing in cats, driven by latent feline herpesvirus reactivation and the resulting chronic rhinosinusitis with secondary bacterial infection.
Feline Immunodeficiency Virus (FIV)
Chronic or recurrent sneezing in FIV-positive cats often reflects upper respiratory infections that establish more readily and persist longer due to compromised mucosal immune defences.
Nasopharyngeal Polyps
Chronic sneezing is common with nasopharyngeal polyps as the growth irritates the respiratory passages.
Feline Herpesvirus (FHV-1)
Feline herpesvirus damages the nasal lining, triggering frequent sneezing during active infection.
Feline Calicivirus
Upper respiratory tract involvement produces sneezing and nasal irritation.
When to explore further
Sneezing that persists for more than two to three weeks following an apparent upper respiratory infection, or that recurs in a pattern with identifiable triggers, may suggest the establishment of a chronic process rather than a simple acute infection.
Unilateral nasal discharge accompanying the sneezing — discharge consistently from only one nostril — may suggest a localised cause such as a foreign body, dental disease, or nasal mass, rather than the bilateral disease typical of chronic viral rhinosinusitis.
Sneezing that produces blood-tinged discharge, particularly if the bleeding is recurrent or progressive, may suggest mucosal erosion, turbinate damage, or in some cases a mass lesion within the nasal passages.
Chronic sneezing accompanied by reduced appetite, weight loss, or progressive facial swelling may suggest a more significant underlying process that extends beyond simple chronic rhinitis.
Sneezing that has been progressively worsening over weeks to months, without the episodic improvement typically seen with viral-associated disease, may warrant further investigation to distinguish between inflammatory and neoplastic causes.
Observing the pattern of sneezing over time — whether it is truly continuous or episodic, whether it correlates with identifiable stressors, and whether it involves one or both nostrils — can help characterise the underlying process. Noting the character of any associated nasal discharge (clear, cloudy, coloured, blood-tinged) and whether it changes during or between episodes provides additional useful context. Keeping a brief diary of episodes, their duration, and any apparent triggers can be valuable for building a longitudinal picture of the condition.
Last reviewed: 24 April 2026 · Dr Alastair Greenway MRCVS