Symptoms and Diagnosis of Hand, Foot, and Mouth Disease
Symptoms of hand, foot, and mouth disease usually include fever, mouth sores, and skin rash. The rash is commonly found on the hands and feet.
Hand, foot, and mouth disease is common in infants and children younger than 5 years old. Most children have mild symptoms for 7 to 10 days.
Fever and flu-like symptoms
Children often get a fever and other flu-like symptoms 3 to 5 days after they catch the virus. Symptoms can include:
- Eating or drinking less
- Sore throat
- Feeling unwell
Your child can get painful mouth sores. These sores usually start as small red spots, often on the tongue and insides of the mouth, that blister and can become painful.
Signs that swallowing might be painful for your child:
- Not eating or drinking
- Drooling more than usual
- Only wanting to drink cold fluids
Your child can get a skin rash on the palms of the hands and soles of the feet. It can also show up on the buttocks, legs, and arms.
The rash usually is not itchy and looks like flat or slightly raised red spots, sometimes with blisters that have an area of redness at their base. Fluid in the blister and the resulting scab that forms as the blister heals can contain the virus that causes hand, foot, and mouth disease.
Keep blisters clean and avoid touching them.
When to see a healthcare provider
See a healthcare provider if
- Your child is not able to drink normally and you’re worried they might be getting dehydrated.
- Your child is not alert and responsive.
- Your child’s fever lasts longer than 3 days.
- Symptoms do not improve after 10 days.
- Your child has a weakened immune system (body’s ability to fight germs and sickness).
- Symptoms are severe.
- Your child is very young, especially younger than 6 months.
Diagnosing hand, foot, and mouth disease
Healthcare providers can usually tell if someone has hand, foot, and mouth disease by examining the patient and the rash appearance while considering the patient’s age and other symptoms.
Sometimes, healthcare providers might collect samples from the patient’s throat or feces (poop) and send them to a laboratory to test for the virus. However, these tests are rarely done.