Throat blistering is a possible cause of hand, foot and mouth disease, herpes pharyngitis, tonsillitis and so on. 1. Hand, foot and mouth disease: usually associated with viral infection. It can lead to blisters in the oral cavity, pharynx, hands and feet, and is accompanied by symptoms such as fever and malaise, and is mainly found in the pediatric population. 2. Herpes pharyngitis: usually caused by enterovirus infection, the pathogen after entering the human body, may lead to inflammation of the oral cavity and the pharynx, will make the throat blisters, may also be accompanied by fever, sore throat, vomiting, diarrhea and other symptoms. 3. Tonsillitis: acute follicular tonsillitis, for example, can lead to blistering of the throat, which may be accompanied by high fever, headache, sore throat, fatigue and other symptoms. There may be other reasons for throat blistering, and it is recommended that you seek medical attention as soon as possible for examination and treatment to avoid aggravation of the lesion.