What causes strawberry tongue?

Normally the top of the tongue is covered by pale, threadlike papillae that hide the redder taste bumps. In strawberry tongue, the tongue becomes inflamed and swollen, the coating sheds, and the fungiform papillae stand out as enlarged red dots on a red background.

It can appear in two stages. Cleveland Clinic describes a "white strawberry tongue" first, with a white coating that the red bumps poke through, which within a few days turns into a bright red strawberry tongue. The NHS describes the same sequence in scarlet fever: a white coating that peels, leaving the tongue red, swollen and covered in little bumps.

Scarlet fever

A group A strep infection, most common in young children. The NHS describes flu-like symptoms (high temperature, sore throat, swollen neck glands) followed 12-48 hours later by a rash of small raised bumps that feels like sandpaper, starting on the chest and tummy, with flushed cheeks. It is treated with antibiotics, which shorten the illness and lower the risk of complications.

Kawasaki disease

An inflammation of blood vessels that mainly affects young children. HealthyChildren.org (American Academy of Pediatrics) notes 80-90% of cases are in children under 5 and older than 6 months. Signs are a fever above 102°F lasting at least five days, very red swollen cracked lips, a strawberry tongue, red eyes without discharge, red swollen hands and feet, a rash and a swollen gland on one side of the neck. Not all signs appear at once. It is treated in hospital, and treatment within the first 10 days of illness significantly reduces the risk of damage to the coronary arteries.

Toxic shock syndrome

A rare but serious reaction to toxins from staph or strep bacteria. Cleveland Clinic notes symptoms usually develop quickly, within about 48 hours. MedlinePlus lists high fever, low blood pressure, vomiting, confusion and a widespread sunburn-like rash, and treats it as a medical emergency.

• Food or drug allergy: can make the tongue red and swollen; sudden swelling with breathing difficulty is an emergency.
• Vitamin B12 deficiency: listed by Cleveland Clinic as a rare cause; more often it makes the tongue sore and smooth.
• Other infections: rare reports include Yersinia and, in one 2025 case report, Epstein-Barr virus, which shows strawberry tongue is not specific to one disease.
• Glossitis: a red, inflamed tongue that is usually smooth and glossy rather than bumpy. See glossitis.
• Normal prominent papillae or irritation: red dots only at the tip, with no fever and no swelling, are usually harmless; see red dots on the tip of the tongue.

Only a doctor can confirm which one it is; the CDC notes that scarlet fever diagnosis needs a strep test.

A strawberry tongue on its own is not something to treat at home. The tongue returns to normal once the underlying illness is treated. While you arrange to be seen:

• Offer cool fluids and soft food if the mouth or throat is sore.
• Use acetaminophen or ibuprofen for fever as directed on the package. Do not give aspirin to children unless a doctor tells you to.
• Note when the fever started and which other signs appeared; this timeline helps the doctor, especially for Kawasaki disease.
• Keep a child with suspected scarlet fever away from others until assessed; it spreads easily.

Tongue cleaning or scraping does nothing for strawberry tongue and should be avoided while the tongue is inflamed.

Cleveland Clinic advises always contacting a healthcare provider if you suspect strawberry tongue. Seek care the same day if it comes with fever, and go to the emergency department for a high fever with confusion, fainting, a widespread sunburn-like rash, or difficulty breathing.