why is my cat sneezing?

Sneezing in cats is a reflex to expel irritants from the nasal passages. The most common cause is an upper respiratory infection (URI), often viral (Feline Herpesvirus or Calicivirus) or bacterial. These infections typically present with other symptoms like watery eyes, nasal discharge, lethargy, and decreased appetite. Less commonly, fungal infections can also cause URIs.

Environmental factors frequently trigger sneezing. These include dust, pollen, mold, strong chemical cleaners, air fresheners, perfumes, and cigarette smoke. Identifying and removing these irritants can resolve the issue. Allergies, though less common than in dogs or humans, can also cause sneezing in cats. A foreign body, such as a piece of grass or a seed, can become lodged in the nasal cavity, causing sudden, forceful, and often one-sided sneezing. Dental disease, particularly an abscessed tooth root in the upper jaw, can erode into the nasal cavity, leading to chronic sneezing and sometimes a foul-smelling discharge.

Warning: If your cat's sneezing is persistent, severe, accompanied by lethargy, loss of appetite, difficulty breathing, or thick nasal discharge, consult your veterinarian promptly. These symptoms may indicate a more serious underlying condition requiring medical attention.