Hand, foot, and mouth disease (HFMD) can be quite painful, especially because of the mouth sores. The blisters that form on the tongue, gums, and inside of the cheeks often cause enough pain to make eating and drinking difficult, which is the biggest concern for young children. The rash on the hands and feet tends to be less painful, though it can be uncomfortable. Most of the worst pain lasts about 3 to 5 days before it starts to ease.
Where the Pain Comes From
The most painful part of HFMD is almost always the mouth. Small red spots appear on the tongue, the insides of the cheeks, and sometimes the gums or the back of the throat. These spots blister and then break open into shallow ulcers. Because the lining of the mouth is so sensitive and constantly exposed to saliva, food, and drink, even small ulcers can produce sharp, stinging pain. If the sores develop further back in the throat, swallowing itself becomes painful.
The flat red spots or blisters on the palms of the hands and soles of the feet are usually more annoying than truly painful. They can feel tender when pressed, and walking may be uncomfortable if the soles are heavily affected. In toddlers who are still crawling, blisters on the hands can cause fussiness. A more general rash sometimes appears on the buttocks, knees, or elbows, but this is typically not painful and resolves on its own.
How to Tell a Child Is in Pain
Young children, especially toddlers, can’t always describe what hurts. The clearest signs that mouth sores are causing pain include refusing to eat or drink, drooling more than usual, and only wanting cold fluids. A child who was eating normally and suddenly stops, or who cries when offered food, likely has painful sores developing inside the mouth. Irritability and trouble sleeping are also common during the worst days.
Dehydration is the main risk when a child won’t drink because swallowing hurts. Watch for fewer wet diapers, dry lips, crying without tears, or unusual sleepiness. These signs mean your child needs fluids even if drinking is uncomfortable.
Pain Timeline
HFMD typically starts with a fever, sore throat, and general malaise. One to two days after the fever begins, the painful mouth sores appear, and the rash on the hands and feet follows shortly after. The mouth pain tends to peak around days 2 through 4 of the illness. Most children feel significantly better within a week, and the blisters heal without scarring. The skin rash on the hands and feet can linger a bit longer, sometimes peeling as it resolves, but by that point it’s rarely painful.
What Helps With the Pain
Over-the-counter pain relievers like acetaminophen (Tylenol) or ibuprofen (Advil, Motrin) can reduce both fever and mouth pain. Never give aspirin to children, as it’s linked to a rare but serious condition called Reye’s syndrome. For children over age 4, some throat lozenges or sprays containing a numbing agent can temporarily dull mouth pain, but lozenges are a choking hazard for younger kids. Benzocaine-containing products should not be used in children under 2.
Cold foods and drinks are often the most effective comfort measure. Ice water, frozen fruit pops, slushies, and chilled breastmilk popsicles can numb the sores enough to get fluids in. Soft, bland foods like yogurt, mashed potatoes, applesauce, and oatmeal are easiest to tolerate. Anything salty, spicy, citrusy, or carbonated will sting the open sores and make pain worse. Orange juice and soda are particularly irritating, so stick to water, diluted apple juice, or electrolyte popsicles.
Pain in Adults
Adults can catch HFMD too, and the experience is often more uncomfortable than expected. Adults tend to develop the same mouth ulcers and skin blisters as children, sometimes with more extensive rashes on the hands and feet. The mouth pain follows the same pattern: sores on the tongue and inner cheeks that sting with eating and drinking. Some adults also report body aches, fatigue, and a general flu-like feeling during the first few days. The illness resolves in about the same timeframe, roughly a week, but adults frequently describe it as surprisingly miserable for what’s considered a childhood illness.
Keeping Kids Hydrated Through the Pain
The single most important thing during HFMD is keeping your child hydrated, even when swallowing hurts. Small, frequent sips of cold water work better than trying to get a full cup down at once. Popsicles are especially useful because they deliver fluid slowly while numbing the mouth. If your child won’t drink from a cup, try a syringe to place small amounts of liquid toward the back of the mouth, or offer ice chips to suck on. The goal is to get enough fluid in to keep urine output normal, even if your child is eating very little solid food for a few days. Most children bounce back to normal eating within a week as the sores heal.