What is Tonsillitis | Hi9 | Dr. Rao's Ent Super Speciality International Hospital – Tonsillitis are a pair of lymph node which are present at back of your throat, the main function of this tonsils is to produce anti bodies against viruses and bacteria that enter our Mouth and Nose. Some times this tonsils themselves may get effected or infected and results in Tonsillitis, during tonsillitis your kid may experience high great fever or temperature, swore throat, difficulty in swallowing both liquids and solids.