Hand-foot-and-mouth disease is an illness that causes sores in or on the mouth and on the hands, feet, and sometimes the buttocks and legs. The sores may be painful. The illness usually doesn't last more than a week or so. Hand-foot-and-mouth disease is common in children but can also occur in adults.

Hand, foot, and mouth disease is a common viral illness that usually affects infants and children younger than five years old. However, it can sometimes occur in older children and adults. Typical symptoms of hand, foot, and mouth disease include fever, mouth sores, and a skin rash.