Inflammation of the baby’s throat is usually caused by upper respiratory tract infection, which can be caused by viral infection or bacterial infection. Clinical symptoms are not specific, but include sore throat, elevated body temperature, swollen lymph nodes, cough, general malaise, and depression. Viral cases are usually seen in herpes pharyngitis, which is usually caused by herpes zoster virus, coxsackie virus, and adenovirus infection, manifesting as scattered herpes-like changes in the pharyngeal isthmus and soft palate pharyngeal wall. The bacterial form is commonly due to Streptococcus hemolyticus type B and S. pneumoniae infections, which manifest in the redness and swelling of the pharyngeal mucosa, enlarged tonsils, and more or less purulent discharge exuding from the surface.