Hand, Foot, and Mouth Disease

Hand-foot-and-mouth disease is a common viral infection, especially in infants and young children. It often causes fever, mouth sores, and a rash or blisters on the hands and feet. In many cases it improves on its own, but mouth pain and reduced fluid intake can make care at home challenging. ^[1][2]

What is hand-foot-and-mouth disease?

HFMD is usually caused by enteroviruses, most commonly coxsackievirus. It spreads easily among young children in homes, daycares, and schools because close contact, shared surfaces, saliva, nasal secretions, and stool can all play a role. The illness is often mild, but it can still be disruptive because children may refuse food and drink due to painful mouth ulcers. ^[1][2][4]

The name describes the common rash pattern, but not every child has identical spots in all three areas. Some children mainly have mouth lesions and fever, while others show more obvious skin findings. ^[1][2]

What are the symptoms?

Typical symptoms include fever, reduced appetite, sore throat, irritability, painful mouth sores, and a rash or small blisters on the hands, feet, and sometimes buttocks or legs. Younger children may drool more than usual because swallowing hurts. ^[1][2]

The biggest short-term concern is often dehydration. A child who will not drink because of mouth pain can quickly become less active, urinate less, and appear dry or weak. ^[1][3]

How does it spread?

The infection spreads through close contact with respiratory droplets, saliva, blister fluid, stool, and contaminated surfaces. Children may be most contagious during the first days of illness, but the virus can sometimes be shed longer in stool. This is why good hand hygiene and surface cleaning remain important even after a child starts feeling better. ^[1][2][4]

Home care and treatment

Treatment is usually supportive. That means focusing on fluids, soft foods when tolerated, and comfort measures recommended by a clinician. Antibiotics are not helpful because HFMD is caused by a virus. Monitoring hydration matters more than trying unnecessary medications. ^[1][2]

Cold or soft foods may be easier to tolerate than acidic or spicy foods. If a child refuses all liquids, becomes unusually sleepy, or develops signs of dehydration, medical advice should be sought promptly. ^[1][3]

When should you see a doctor?

Medical review is appropriate if the child is not drinking, has fewer wet diapers or very little urine, becomes difficult to wake, has persistent high fever, or seems to be getting worse rather than better. In infants, children with underlying health conditions, or cases with unusual neurologic symptoms, assessment should be more prompt. ^[1][2][4]

Daycare and school period management

Because HFMD is common in group settings, families often ask when a child can return. Policies vary, but return decisions generally take into account fever status, ability to participate, and local rules. Since viral shedding can continue even after symptoms improve, hand hygiene remains important. ^[1][2]

Can adults get it too?

Yes. Adults can also develop HFMD, particularly after close exposure to infected children. In adults the illness may be mild, but sometimes symptoms can still be uncomfortable. When an adult has fever, sore throat, mouth ulcers, and a compatible rash after exposure, HFMD may be considered. ^[1][2]

FAQ

How many days does hand-foot-and-mouth disease last?

Many cases improve within about a week, although timing can vary. ^[1][2]

Who gets HFMD most often?

It is most common in infants and young children, especially in group settings such as daycare. ^[1][2]

Are antibiotics needed?

No. HFMD is a viral infection, so antibiotics do not treat it. ^[1][2]

What is the most important risk?

A key concern is dehydration when mouth pain reduces drinking. ^[1][3]

When should you see a doctor?

Seek medical advice if the child is not drinking, seems dehydrated, becomes unusually sleepy, or the illness is worsening. ^[1][2]