A viral infection
Hand-foot-mouth disease is a viral infection that causes fever
, blister-like spots in the mouth, and/or a skin rash
Hand-foot-mouth disease is not the foot-and-mouth (or hoof-and-mouth) disease of cattle, sheep, and pigs. The two diseases are not related. They are caused by different viruses. Humans do not get the animal disease, and animals do not get the human disease.