Scarlet fever (Paediatrics)

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Infection caused by a strain of bacteria called group A beta-hemolytic streptococcus. It is most common between the ages of 2 and 12 and is rare in children under the age of 2.

It is spread through the secretions and/or saliva of an infected person. The bacteria can release a toxin to which some people are sensitive, causing a rash that is typical of the disease.

The most common symptoms are a rash, fever, sore throat and redness. The rash looks like a sunburn and is textured and itchy. It usually covers the whole body and may be more pronounced in skin folds. It usually disappears after 4 to 6 days and then a process of scaling begins that can last for weeks.

The diagnosis is made clinically by interview and physical examination. Confirmation requires a rapid strep test (RST) with some throat secretions.

Treatment is based on oral antibiotics or injections, depending on the severity of the case.

Bibliographic references
  1. Ferretti JJ, Stevens DL, Fischetti VA, editors. Streptococcus pyogenes : Basic Biology to Clinical Manifestations. Oklahoma City (OK): University of Oklahoma Health Sciences Center; 2016.
  2. García-Vera C, de Dios Javierre B, Castán Larraz B, Arana Navarro T, Cenarro Guerrero T, Ruiz Pastora R, Sánchez Gimeno J. Scarlet fever: A not so typical exanthematous pharyngotonsillitis (based on 171 cases).Enferm Infecc Microbiol Clin. 2016 Aug-Sep;34(7):422-6.
  3. Paul SP, Heaton PA. At a glance: sacrlet fever in children. J Fam Health Care. 2014 Apr;24(3):25-7. Review.
  4. Wong SS, Yuen KY. Streptococcus pyogenes and re-emergence of scarlet fever as a public health problem. Emerg Microbes Infect. 2012 Jul;1(7):e2. doi: 10.1038/emi.2012.9. Epub 2012 Jul 11. Review.
  5. Mahara G, Chhetri JK, Guo X. Increasing prevalence of scarlet fever in China.BMJ. 2016 May 17;353:i2689. doi: 10.1136/bmj.i2689.
Author
Dr. Maria Trabazo
Copyright
© TeckelMedical 2026

Symptoms

    Skin rash


    Strawberry-looking tongue


    Fever / Feel very hot


    Rash is redder in skinfolds


    Red or swollen tonsils

Symptoms to watch out for

High fever (39 ºC or more)
Expectoration that contains mucus and pus
Inability to swallow
Pass less water than a 500ml soft drink bottle in 24 hours.
Dark or cola-coloured urine

Self-care

Consume over-the-counter pain relievers or anti-inflammatories.
Consume antiemetics if vomits are present.
Check with your general practitioner about the prescription for antibiotics.