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Hand, foot, and mouth disease (HFMD) is caused by viruses from a group called enteroviruses. HFMD is common in infants and children, but can also affect adults. Symptoms can include fever, sore throat, and blistering sores in the mouth that become ulcers. A rash may appear on the palms and soles of the hands and feet.
Hand-foot-and-mouth disease. This common illness is caused by a group of viruses known as enteroviruses. Coxsackievirus A16 is the enterovirus responsible for most cases of hand-foot-and-mouth disease. The illness occurs most commonly in babies and children under the age of 5, but adults may be affected, too. Fever, sore throat, reduced appetite, and malaise are early symptoms of infection.