Tonsillitis refers to the inflammation of the tonsils, the lymphatic tissues located at the back of the throat. These structures play a crucial role in the immune system, acting as a defense against infections.

However, when they become inflamed due to a viral or bacterial infection, they can cause significant discomfort. The most common bacterial cause is group A Streptococcus. Tonsillitis is classified as acute when symptoms, such as a sore throat, appear suddenly and typically last 3 to 7 days