Herpangina in Children: Symptoms, Relief, and Expert Dental Care

If your child has developed a sudden high fever and is struggling to eat or drink, they may have herpangina. This common, contagious viral infection causes painful, blister-like sores in the back of the mouth and throat. While uncomfortable, it is generally a self-limiting condition that resolves on its own within about seven days.

What Is Herpangina?

Herpangina is a viral infection, most often caused by strains of the coxsackievirus, enterovirus, or echovirus. It is highly contagious and spreads through respiratory droplets, bodily fluids, or contact with contaminated surfaces and fecal matter. It is very similar to a condition called hand, foot and mouth virus (HFMV). While it can affect anyone, it is most common in toddlers and school-aged children, particularly during the summer and fall.

Symptoms of Herpangina

The primary indicator of herpangina is the development of small, gray or white-ish blisters with a red border in the mouth. These typically appear on the roof of the mouth, tonsils, and back of the throat, eventually turning into shallow, painful ulcers. Other symptoms include:

• Sudden, high fever (sometimes reaching 106°F)
• Severe sore throat
• Difficulty swallowing or speaking
• Loss of appetite
• Headache and neck pain

Clinical Note: Unlike some other viral mouth infections, the lesions in herpangina are typically localized to the posterior oropharynx (back of the throat), which helps clinicians distinguish it from other oral conditions.

Relieving Discomfort at Home

Because herpangina is viral, there is no specific treatment; it must run its course. You can help your child feel better by focusing on these supportive measures:

• Pain and Fever Management: Administer medications as recommended by your pediatrician.
• Hydration: Ensure your child drinks plenty of fluids to prevent dehydration.
• Soothing Foods: Offer cold, soft, or bland foods like sugar-free ice pops or cool liquids to numb the throat.
• Oral Hygiene: Continue gentle brushing. Consult your dentist regarding the use of therapeutic mouth rinses to reduce inflammation and promote healing.
• Gargling: If your child is old enough, have them gargle with cool water.

Prevention and Transmission

To prevent spreading the virus to siblings or classmates, practice frequent handwashing and disinfect surfaces your child has touched. Keep your child home from school or daycare until they have fully recovered. It is especially important to isolate infected children from newborns, pregnant women, and individuals with compromised immune systems, as the virus can pose a greater risk to these groups.

Frequently Asked Questions

How is herpangina diagnosed?

A pediatrician can typically diagnose herpangina through a physical examination of the mouth and throat; no laboratory tests are usually required.

Is herpangina the same as HFMV?

They are related conditions caused by similar viruses, but they are distinct. Herpangina is characterized specifically by sores in the back of the throat, whereas HFMV typically includes a rash on the hands and feet.

When should I call the doctor?

Contact your pediatrician if you suspect your child has herpangina to confirm the diagnosis. Red Flag: Seek immediate medical attention if your child shows signs of severe dehydration, such as a lack of tears, dry mouth, sunken eyes, or a significant decrease in urination (fewer than 6 wet diapers in 24 hours for infants).

Can I still brush my child’s teeth?

Yes. Maintaining oral hygiene is important to prevent secondary infections. Use a soft-bristled brush and be gentle. Check with your dentist about using an age-appropriate, soothing mouth rinse.

Oral Care Center articles are reviewed by an oral health medical professional. This information is for educational purposes only. This content is not intended to be a substitute for professional medical advice, diagnosis or treatment. Always seek the advice of your dentist, physician or other qualified healthcare provider.