what is hands foot and mouth
By Mayo Clinic Staff. Hand-foot-and-mouth disease â a mild, contagious viral infection common in young children â is characterized by sores in the mouth and a rash on the hands and feet. Hand-foot-and-mouth disease is most commonly caused by a coxsackievirus. There's no specific treatment for hand-foot-and-mouth disease. You can reduce your child's risk of infection from hand-foot-and-mouth disease by practicing good hygiene and teaching your child how to keep clean.