Hand, Foot and Mouth Disease Treatment in Patong, Phuket: Same-Day Care for Children and Adults 24/7
Same-day assessment of fever, mouth ulcers and the typical hand-foot-bottom rash, hydration support, paediatric pain relief and red-flag screening for severe Enterovirus 71 disease. Walk-in clinic or hotel-room visit, day or night. Clinically reviewed by the Doctor Patong Takecare Clinic medical team.
WhatsApp now for same-day review | Call +66 81 718 9080 | Find the clinic on Google Maps
HFMD is one of the most common reasons families on holiday in Phuket bring a child in to see us, especially during the hot and humid months when outbreaks circulate through daycares, hotel kids clubs and family pools. The illness itself is usually mild and self-limiting, but the mouth ulcers can be severe enough to stop a child drinking, and a small minority of cases caused by EV71 progress quickly to dangerous neurological or cardiac complications. Our job is to confirm the diagnosis, set up hydration and pain control that actually work, and screen carefully for the warning signs that mean a child needs hospital admission rather than home rest.
What causes HFMD and how it spreads
HFMD is caused by enteroviruses, most commonly Coxsackievirus A16, which produces the classic mild illness. Coxsackievirus A6 is increasingly seen across Asia and tends to cause a more widespread rash that can extend to the forearms, thighs and face, sometimes called atypical HFMD. The strain that matters most clinically is Enterovirus 71 (EV71), the virus behind large outbreaks across Thailand, Vietnam, Malaysia and southern China, which carries a small but real risk of encephalitis, brainstem inflammation and myocarditis. The virus spreads three ways: respiratory droplets when an infected child coughs or sneezes, faecal-oral contact through unwashed hands after a nappy change or toilet visit, and direct contact with fluid from the blisters. Incubation is typically 3 to 6 days, and a child is infectious from about 1 to 2 days before the rash appears until all blisters have crusted, although the virus continues to shed in stool for several weeks afterwards. Outbreaks cluster in young children under 5, but older children and adults can absolutely catch it, and adult cases often run a more severe course.
Symptoms and the typical timeline
The illness usually starts with 1 to 2 days of fever, sore throat, malaise and poor appetite, often mistaken for an ordinary viral cold. By day 2 or 3, painful ulcers (herpangina) appear inside the mouth on the tongue, gums and inner cheeks, and this is the point at which a child often stops eating and drinking. Over days 3 to 7, small greyish-white vesicles with a red halo come up on the palms, soles, between fingers and toes, and on the buttocks. The rash is usually not itchy but can feel sore or tight. Coxsackie A6 sometimes produces a more dramatic rash that spreads beyond the classic sites. Most children recover fully within 7 to 10 days. A small number develop nail shedding (onycholysis) weeks later, which looks alarming but is harmless and self-corrects. Diagnosis is almost always clinical, based on the age of the child and the distinctive rash pattern, and laboratory PCR of vesicle fluid or stool is reserved for severe cases or outbreak investigation.
The three main HFMD viruses compared
| Virus | Typical severity | Rash and clinical features | Complications to watch for |
|---|---|---|---|
| Coxsackievirus A16 | Mild, the classic form. | Fever, mouth ulcers, vesicles on palms, soles and buttocks. Resolves in 7 to 10 days. | Mainly dehydration from painful mouth ulcers. Serious complications are rare. |
| Coxsackievirus A6 | Moderate, atypical HFMD. | More widespread rash including forearms, thighs and face. Longer illness, more adult cases. | Skin pain and dehydration. Nail shedding weeks later. Neurological risk low. |
| Enterovirus 71 (EV71) | Most severe, the Asian outbreak strain. | Same rash but often with persistent high fever, drowsiness and myoclonic jerks. | Encephalitis, brainstem inflammation, polio-like paralysis, myocarditis, pulmonary oedema, shock. |
Supportive treatment that actually helps
There is no antiviral medicine for HFMD, so every part of treatment is aimed at keeping the child hydrated and comfortable until the virus clears. Hydration is the single most important goal because the mouth ulcers make swallowing painful, and dehydration is the most common reason a child with HFMD ends up needing IV fluids. Cold soft fluids work best: chilled water, oral rehydration solution, diluted juice (not citrus), milk, yoghurt drinks, popsicles and ice cream all numb the ulcers and put fluid in at the same time. Acidic, spicy and salty foods should be avoided because they sting raw ulcers, and offering small frequent volumes through a straw or syringe is usually better than insisting on full meals. For pain and fever we use paracetamol at 15 mg per kg every 4 to 6 hours in children, or 1 g every 6 hours in adults up to 4 g per day. Ibuprofen at 10 mg per kg every 6 to 8 hours can be added once the child has had something in the stomach, and the two together cover most pain. Aspirin must be avoided in children because of the risk of Reye’s syndrome. Mouth care helps with eating: topical lidocaine gel can numb ulcers in older children and adults, sucralfate suspension forms a soothing coating, and chlorhexidine 0.2 percent mouthwash reduces secondary infection in older children. We do not give swallowed viscous lidocaine to small children because absorbed lidocaine can be toxic at that age. The rash itself rarely needs treatment, although aqueous cream or calamine helps if the skin feels sore or itchy.
Contagiousness, isolation and going back to school
A child with HFMD should stay home until they have been fever-free for 24 hours without paracetamol, all blisters have dried, and they are eating and drinking comfortably again, which is usually 7 to 10 days from the first symptom. The virus continues to shed in stool for several weeks even after recovery, so good handwashing carries on long after the child looks better. Adults who work with food, in childcare or in healthcare should stay off work until lesions have crusted. Airlines may refuse boarding if a passenger has fresh visible blisters together with a fever, and this is worth knowing if a family is mid-trip in Phuket. In a hotel setting, isolating the sick child to one room, not sharing utensils or towels, and wiping down shared surfaces and toys with a regular disinfectant cuts onward transmission to siblings significantly.
When to see a doctor
Most HFMD is mild and can be managed at home with the measures above, but a small group of children deteriorate, and the deterioration in severe EV71 disease can be quick. Anyone whose child stops drinking, looks dehydrated, becomes unusually sleepy, develops twitching or jerking movements, or has a fever above 39 degrees that does not settle after 3 days needs same-day review. Pregnant women who catch HFMD are usually fine, but late-pregnancy infection occasionally affects the newborn and warrants a check.
Refusing fluids for more than a few hours, dry mouth, no wet nappy for 6 to 8 hours, sunken eyes or lethargy (dehydration). Persistent fever above 39 degrees lasting more than 3 days. Drowsy, very irritable or hard to rouse. Sudden twitching, tremor or myoclonic jerks (early central nervous system involvement with EV71). Any seizure. Severe headache or neck stiffness. Fast breathing, breathlessness or chest pain. Cool hands and feet, mottled skin or unusually pale. Refusing food for more than 24 hours in a small child. These features suggest severe EV71 disease or significant dehydration and need urgent hospital review at Bangkok Hospital Phuket or Vachira Hospital for IV fluids and monitoring, which we arrange and refer for directly.
You are not sure whether the rash is HFMD, chickenpox or something else, the mouth pain is stopping your child eating and drinking, or the illness has been going on more than 5 days without improvement. Adults with HFMD often feel rougher than expected and benefit from a review for hydration and time-off documentation. WhatsApp +66 95 073 5550 for a same-day appointment at the clinic or a hotel-room visit.
Prevention and early self-care
Hand hygiene is by far the most effective way to break HFMD transmission, and it is worth doing properly because alcohol gels are not as effective against enteroviruses as they are against most respiratory viruses. The right method is soap and running water for 20 seconds after every toilet visit, every nappy change and before every meal, for both the child and whoever is caring for them. Shared toys, doorknobs, tablets, remote controls, high chairs and bathroom taps should be wiped down daily with a household disinfectant during an active case at home. Utensils, cups, towels and toothbrushes should not be shared, and the sick child should ideally eat from their own plate with their own cutlery for the duration of the illness. At home or in a hotel, keep the sick child away from infants and from anyone immunocompromised, and cough etiquette (tissue into a bin, then handwashing) reduces droplet spread. There is an EV71 vaccine licensed in China and used in some Asian countries, but it is not routinely available in Thailand at this time, and there is no vaccine for Coxsackieviruses, so hygiene is the only practical prevention for travellers.
Summary
HFMD is almost always a mild self-limiting illness that resolves in 7 to 10 days, but the painful mouth ulcers can stop a child drinking, and a small fraction of EV71 cases turn dangerous quickly. The clinic pathway is the same for every family who comes in: confirm the diagnosis on the rash pattern, set up hydration with cold soft fluids, layer paracetamol with ibuprofen for pain, screen carefully for the EV71 red flags (drowsiness, myoclonic jerks, persistent high fever, breathlessness), and arrange a hospital admission only when truly needed. For most children, the right home plan and a follow-up WhatsApp check is all that is required.
“The parents who do best with HFMD at home are the ones who treat the mouth ulcers seriously. Cold drinks, popsicles, paracetamol and ibuprofen on the clock, and small frequent sips. Once a child is drinking, almost everything else takes care of itself.”
Doctor Patong Takecare Clinic medical team
Frequently asked questions
How long is HFMD contagious?
A child is most infectious from 1 to 2 days before the rash appears until all blisters have dried and crusted, usually about a week. The virus continues to shed in the stool for several weeks after recovery, however, which is why thorough handwashing after nappy changes and toilet visits matters long after the rash has cleared. Reinfection with a different strain is possible, so one episode does not provide full lifetime immunity.
When can my child go back to school or daycare?
Once your child has been fever-free for at least 24 hours without paracetamol, all blisters have dried and crusted over, and they are eating and drinking normally again. For most children that is 7 to 10 days from the first fever. Schools and hotel kids clubs in Thailand often ask for a medical clearance note, which we issue at no extra charge when we review the child.
Should I give paracetamol or ibuprofen, and can I use both?
Both work well. Paracetamol at 15 mg per kg every 4 to 6 hours is the first choice and is safe on an empty stomach. Ibuprofen at 10 mg per kg every 6 to 8 hours can be added once the child has had a little food or milk, and alternating the two through the day gives stronger pain relief than either alone. Aspirin must not be used in children under 16 because of the risk of Reye’s syndrome.
Can adults catch hand, foot and mouth disease?
Yes, adults can absolutely get HFMD, and the illness is often more severe than in children, particularly with the Coxsackie A6 strain that causes atypical HFMD with a more widespread rash. Treatment is identical: paracetamol, ibuprofen, cold soft fluids and rest. Adults who work in food service, childcare or healthcare must stay off work until lesions have fully crusted.
Should I be worried about Enterovirus 71?
EV71 is the strain behind the large Asian HFMD outbreaks and is the reason we screen every child carefully. The vast majority of EV71 cases still recover fully, but a small minority develop encephalitis, brainstem inflammation or myocarditis, and these complications can progress within hours. Persistent high fever, drowsiness, twitching or myoclonic jerks, and breathlessness are the warning signs that we treat as an emergency.
When should I really start to worry?
Come in the same day if your child cannot or will not drink, has no wet nappies for 6 to 8 hours, is unusually drowsy or hard to rouse, has any twitching, tremor or seizure, has a fever above 39 degrees for more than 3 days, or is breathing fast or looking pale and mottled. These features can signal dehydration or severe EV71 disease, and a short clinic review can decide whether home treatment is still safe or whether hospital admission is needed.
Sources
Centers for Disease Control and Prevention. Hand, Foot, and Mouth Disease. cdc.gov/hand-foot-mouth.
World Health Organization. A Guide to Clinical Management and Public Health Response for Hand, Foot and Mouth Disease (HFMD). who.int HFMD guide.
National Institute for Health and Care Excellence. CKS: Hand, foot and mouth disease. cks.nice.org.uk/hand-foot-mouth-disease.
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