A throat infection is an inflammation of the throat, often caused by viruses or bacteria. Common symptoms include a sore throat, difficulty swallowing, and swollen lymph nodes. The most frequent types of throat infections are pharyngitis, which affects the pharynx, and tonsillitis, which involves the tonsils. Treatment for throat infections depends on the cause. Viral infections usually resolve on their own, while bacterial infections, such as those caused by streptococcus, may require antibiotics. Staying hydrated and using over-the-counter pain relievers can help alleviate symptoms. If symptoms persist, it is important to consult a healthcare professional.