Enlarged tonsils, medically known as tonsillar hypertrophy, occur when the two oval-shaped tissue masses at the back of your throat become swollen beyond their normal size. These lymphoid tissues serve as part of your body’s immune system, helping to trap bacteria and viruses entering through the mouth and nose.
When tonsils become persistently enlarged, they can obstruct the airway and interfere with normal functions like breathing, swallowing, and speaking. Enlarged tonsils affect both children and adults, though the condition is particularly common in children.