Acute tonsillitis can be categorized into simple and purulent types, caused by viruses or bacteria with varying toxicity levels. Pathogens often hide in the tonsils and are more likely to flare up when immunity is low. Appropriate use of anti-inflammatory medication can effectively alleviate symptoms. It may recur during times of weakened immunity or catching a cold, but there is no need to worry as these conditions are relatively easy to treat.