Tonsillitis is an inflammation of the tonsils in the mouth and will often, but not necessarily, cause a sore throat and fever.
Symptoms may include pain in the tonsil area and inability to swallow and/or painful swallowing, white spots may also appear on the tonsils.
There are 3 main types of tonsillitis - Acute, subacute and chronic.
Acute tonsillitis can either be bacterial or viral in origin.
Subacute tonsillitis (which can last between 3 weeks and 3 months) is caused by the antinomyces bacterium.
Chronic tonsillitis which can last for long periods if untreated is almost always bacterial.