Feline focus: Update on feline upper respiratory diseases: condition-specific recommendations.

Clinical signs of upper respiratory disease are common in cats. The differential diagnosis includes viral, bacterial, and fungal infections; chronic rhinosinusitis; foreign bodies; tooth root disease; neoplasia; inflammatory polyps; nasopharyngeal stenosis; and trauma. This article provides specific recommendations concerning the diagnosis, treatment, and prevention of the most common causes of upper respiratory diseases in cats.