Hand, foot, and mouth disease is a common viral illness that usually affects infants and children younger than 5 years old. However, it can sometimes occur in adults. Symptoms of hand, foot, and mouth disease include fever, mouth sores, and a skin rash.
Hand, foot, and mouth disease, or HFMD, is a contagious illness that is caused by different viruses. Infants and children younger than 5 years old are more likely to get this disease. However, older children and adults can also get it. In the United States it is more common for people to get HFMD from spring to fall.