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Tonsillitis in Cats

By Ned F. Kuehn, DVM, MS, DACVIM, Section Chief, Internal Medicine, Michigan Veterinary Specialists
Neil W. Dyer, DVM, MS, DACVP, Director and Pathologist, Veterinary Diagnostic Laboratory, North Dakota State University
Joe Hauptman, DVM, MS, DACVS, Professor of Surgery, Veterinary Teaching Hospital, Michigan State University
Stuart M. Taylor, PhD, BVMS, MRCVS, DECVP,

Also see professional content regarding tonsillitis.

Tonsillitis is inflammation of the tonsils, usually caused by another underlying condition. It sometimes does not cause any signs, but when severe, can cause poor appetite, listlessness, salivation, and difficulty swallowing. Tonsillitis is rare in cats. If a bacterial infection is the cause, appropriate antibiotics provide effective treatment. Most cases of tonsillitis do not require removal of the tonsils (see Tonsillitis in Dogs).