The difference between herpes pharyngitis and hand, foot and mouth disease, both of which are infectious diseases caused by enterovirus infections, is as follows: 1. Herpes pharyngitis occurs only in the oral mucosa and is manifested by herpes and ulcers in the pharynx and tongue. In addition to herpes on the oral mucosa, patients with hand, foot and even hip skin may also have herpes, which is usually the size of a small grain of rice or a green bean. 2. Herpes pharyngitis may be combined with bacterial infections and usually does not appear to be severe and will not be complicated by encephalitis. In contrast, hand, foot and mouth disease may be combined with encephalitis, myocarditis, etc. For severe cases of hand, foot and mouth disease may endanger the life of the child. It is important to take good care of your child and make him wash his hands with hand sanitizer before eating and after defecation. It is important to strengthen physical exercise and physical fitness to prevent herpes pharyngitis and hand, foot and mouth disease.