Hand, foot, and mouth disease (HFMD) is a mild viral illness that almost always resolves on its own within 7 to 10 days. There’s no antibiotic or antiviral that treats it, so caring for it at home means managing pain, preventing dehydration, and keeping your child comfortable while the virus runs its course. Here’s how to do that well.
What to Expect Day by Day
HFMD has an incubation period of 2 to 10 days, with most children showing symptoms around day 3 to 5 after exposure. It typically starts with a fever, sore throat, and general fussiness. Within a day or two, small red spots or painful sores appear inside the mouth, followed by a rash or blisters on the hands, feet, and sometimes the buttocks or legs.
Most children only go through this initial stage and recover within about a week. The mouth sores tend to be the most miserable part, often peaking around days 2 through 4 of visible symptoms. The skin blisters usually don’t hurt much but can itch. Nail peeling sometimes follows weeks later, which looks alarming but is harmless and temporary.
Managing Pain and Fever
Acetaminophen and ibuprofen are your two main tools. Both reduce fever, though typically by about 2 degrees at most. Ibuprofen has the added benefit of reducing inflammation, which can make it more effective for the throat and mouth pain that makes eating difficult. Never give aspirin to children due to the risk of a rare but serious condition called Reye’s syndrome.
For mouth sore pain specifically, calamine-based lotions or topical oral gels containing a mild numbing agent can offer short-term relief before meals. Applying a small amount to visible mouth sores 15 to 20 minutes before eating can help your child get food and fluids down more comfortably. If itching from the skin rash is bothersome, an over-the-counter antihistamine can help, and calamine lotion applied directly to the blisters soothes irritation.
Keeping Your Child Hydrated
Dehydration is the biggest real risk with HFMD, because mouth sores can make children refuse to drink. Cold liquids are your best friend here. Cold water, milk shakes, popsicles, slushes, and sherbet all soothe the mouth while getting fluids in. Many parents find that offering a popsicle is the easiest way to get a reluctant toddler to take in liquid.
Watch for signs that your child isn’t getting enough fluid: fewer wet diapers than usual (fewer than six in 24 hours for infants), no tears when crying, a dry mouth, or unusual sleepiness. If your child is producing very little urine or seems lethargic, that warrants a call to your pediatrician.
What to Feed (and What to Avoid)
Soft, bland, cool foods are easiest on a sore mouth. Mac and cheese, mashed potatoes, cereal softened with milk, yogurt, and ice cream all work well. Anything that doesn’t require much chewing is ideal.
Avoid citrus fruits, orange juice, tomato-based foods, salty snacks, and spicy dishes. The acid and salt sting open mouth sores and will make your child less willing to eat at all. If your child refuses solid food for a day or two, don’t panic. Staying hydrated matters more than eating during the worst of it.
Soothing the Skin Rash
The blisters on hands and feet generally don’t need much treatment. Keep them clean with gentle soap and water, pat dry, and leave them uncovered so they can heal. Don’t pop blisters, as the fluid inside contains virus and breaking them increases infection risk.
If the rash itches, calamine lotion applied to the affected skin can calm it down. Lukewarm baths with colloidal oatmeal (sold at most pharmacies) are another option. Some practitioners recommend green tea leaf baths or lukewarm baths with purslane, which have mild anti-inflammatory properties that may help blisters heal. Cool compresses held against itchy areas also provide quick relief.
How It Spreads and How to Contain It
HFMD spreads through respiratory droplets (coughs, sneezes, talking), direct contact with blister fluid, and the fecal-oral route, which in practical terms means diaper changes. The virus also survives on surfaces for several hours, so toys, doorknobs, and countertops can all be transmission points.
To limit spread within your household:
- Wash hands aggressively. After every diaper change, before preparing food, and after wiping your child’s nose or mouth.
- Disinfect surfaces and toys frequently. Use a disinfectant registered with the EPA as effective against enteroviruses. Standard hospital-grade disinfecting wipes or sprays typically qualify.
- Change contaminated clothing, sheets, and towels as soon as possible and wash them in hot water.
- Avoid sharing cups, utensils, and towels with the sick child.
One important thing to know: children remain contagious for days to weeks after symptoms clear, particularly through stool. Continued hand hygiene after diaper changes matters even when your child looks perfectly healthy again.
When Your Child Can Go Back to Daycare
The CDC says children can return to daycare or school when they meet three conditions: no fever, feeling well enough to participate in normal activities, and no uncontrolled drooling from mouth sores. You don’t necessarily need to wait until every blister has completely healed. That said, some local health departments may require children to stay home during active outbreaks, so check with your daycare’s specific policy.
Symptoms That Need Medical Attention
Most cases of HFMD resolve without any medical intervention. But certain signs suggest something more serious is happening. Contact your child’s doctor if:
- Your child can’t drink enough fluids and you’re worried about dehydration.
- Fever lasts longer than 3 days.
- Symptoms haven’t improved after 10 days.
- Your child is under 6 months old.
- Your child has a weakened immune system.
- You notice severe symptoms like a stiff neck, persistent headache, or unusual confusion.
In very rare cases, HFMD can lead to viral meningitis (causing fever, headache, and a stiff neck or back) or, even more rarely, brain swelling. These complications are uncommon but are the reason persistent high fever or neurological changes like confusion or difficulty moving deserve prompt medical evaluation.
Can Adults Get It?
Yes. Adults can catch HFMD from their children, though they often have milder symptoms or no symptoms at all. When adults do get a full case, the mouth sores and fatigue can be surprisingly rough. The same care principles apply: manage pain with over-the-counter medications, prioritize hydration, eat soft foods, and wash your hands constantly to avoid passing it to others.
Is There a Vaccine?
China approved an inactivated vaccine against enterovirus 71 (one of the viruses that causes HFMD) in 2015, but it’s not available in the United States. That vaccine also only protects against a single strain and doesn’t prevent infection from the coxsackieviruses that cause most U.S. cases. Researchers are working on broader multivalent vaccines that would cover multiple strains, but none have moved beyond early development stages. For now, hand hygiene and surface disinfection remain the primary prevention tools.