If the patient has blisters on the back of the tongue, it is recommended that the patient should undergo a systematic examination in the ENT and stomatology departments. 1. Lymphatic follicular hyperplasia at the root of the tongue, which is very common because there is a lot of lymphatic tissue at the root of the tongue, and when the patient has chronic pharyngitis, a large number of lymphatic follicular hyperplasia at the root of the tongue is likely to occur. In this case, the patient may experience a foreign body sensation in the pharynx and other discomfort. In some cases, the patient has a papillary tumor at the base of the tongue, which appears as a granular neoplasm with a non-smooth surface, and can be treated surgically once detected. 131 examination can detect this condition.