The most common clinical manifestations of tonsillitis include the following: a. Clinical manifestations, sore throat is the most common clinical manifestation, mostly bilateral sore throat, the pain increases when swallowing, the pain can radiate to the ears and other parts, there can also be swallowing difficulties and even breathing difficulties, some patients can appear fever, general malaise and other manifestations of systemic infection. The most important way to diagnose tonsillitis is clinical examination. You can see that the tonsils are congested and enlarged bilaterally, and there can be pus formation inside the tonsillar fossa, which can form a pseudomembrane like thing. In some patients with severe lesions, lymphatic follicular hyperplasia of the lingual root of the posterior pharyngeal wall can occur, which is also a manifestation of tonsillitis involvement. In some patients, swollen and painful lymph nodes can be palpated in the bilateral mandibular corners, which is a manifestation of tonsillitis invasion to the neck. Third, clinically, you can check the blood routine, showing elevated white blood cells and neutrophils, which is also one of the manifestations of tonsillitis.