Scarlet Fever in Children
Content reviewed against published CDC, AAP, NIH guidelines
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Scarlet fever is a bacterial illness caused by Group A Streptococcus (GAS) that produces a characteristic red, sandpaper-textured rash. It typically occurs alongside strep throat or occasionally strep skin infections. Most common in children ages 5-15, it was once a serious childhood disease but is now easily treatable with antibiotics. The rash is caused by erythrogenic toxins produced by the bacteria.
Key takeaways
- Scarlet fever is a bacterial illness caused by Group A Streptococcus (GAS) that produces a characteristic red, sandpaper-textured rash.
- Duration: Fever resolves within 24-48 hours of antibiotics. Sore throat improves in 2-3 days. Rash fades in 3-7 days. Skin peeling may occur 1-3 weeks after rash resolves and can last 1-2 weeks.
- Go to ER if: Difficulty breathing or swallowing
- No vaccine currently available
Symptoms
How It Presents by Age
0-2 years
Rare in this age group due to maternal antibodies and immature immune response to streptococcal toxins. If it occurs, may be atypical with less prominent rash.
Risk level: Low — uncommon
2-5 years
Increasing incidence. Rash may be the first sign noticed before child complains of throat pain. Fever, rash, and irritability. Stomachache may be prominent.
Risk level: Low to moderate
5-12 years
Peak age group. Classic presentation with sore throat, high fever, and sandpaper rash spreading from trunk to extremities. Strawberry tongue and Pastia lines are hallmarks.
Risk level: Moderate — requires antibiotics
12-15 years
Still common but incidence decreases with age. Classic presentation. May have more prominent headache and malaise.
Risk level: Low to moderate
Treatment
Antibiotics
Penicillin V or amoxicillin for 10 days is first-line. Treatment prevents complications (rheumatic fever), reduces contagion period, and shortens illness duration. Azithromycin or cephalosporins for penicillin-allergic patients.
Fever and pain management
Acetaminophen or ibuprofen (6+ months) for fever and throat pain. Alternate as needed for adequate pain control.
Supportive care
Rest, adequate fluids, soft foods for sore throat. Cool compresses may help with rash itching.
Skin care during peeling
Moisturizing lotions for the peeling phase. Peeling is not contagious and is a normal part of recovery (occurs 1-3 weeks after illness).
Home Care
- Offer cool, soft foods and plenty of fluids
- Warm salt water gargle for sore throat (older children)
- Use calamine lotion or oatmeal baths for itchy rash
- Cool-mist humidifier for comfort
- Keep fingernails trimmed to prevent scratching
- Apply unscented moisturizer during the peeling phase
- Complete the full 10-day antibiotic course even when feeling better
When to Worry
Go to the ER if:
- Difficulty breathing or swallowing
- Unable to swallow fluids or drooling
- Signs of dehydration (no tears, no urine, dry mouth)
- High fever (over 104°F) not responding to medication
- Purple or blood-colored rash (petechiae)
- Child appears very ill or confused
Call your doctor if:
- Sandpaper-textured rash with fever and sore throat
- Known strep exposure with new rash
- Symptoms not improving after 2 days of antibiotics
- Recurrent strep infections
- Dark or cola-colored urine after recent strep
- Joint pain developing 2-4 weeks after illness
Keep an eye on:
- Symptoms not improving after 48 hours of antibiotics
- Fever persisting beyond 3-4 days of treatment
- Dark urine or decreased urination (kidney concern)
- Joint pain or swelling after illness (rheumatic fever)
- Rash worsening or developing blisters
Prevention
- Prompt treatment of strep throat with full antibiotic course
- Frequent handwashing
- Avoid sharing utensils, cups, and personal items
- Keep infected children home for at least 24 hours after starting antibiotics
- Replace toothbrush 24-48 hours after starting antibiotics
- Teach proper cough and sneeze hygiene
Contagion & Incubation
Incubation
1-7 days (usually 2-5 days) after exposure to Group A Streptococcus
Contagious for
Contagious from 1-2 days before symptoms until 24 hours after starting antibiotics. Without treatment, contagious for 2-3 weeks.
Duration
Fever resolves within 24-48 hours of antibiotics. Sore throat improves in 2-3 days. Rash fades in 3-7 days. Skin peeling may occur 1-3 weeks after rash resolves and can last 1-2 weeks.
Frequently asked questions
How long does scarlet fever in children last?
How does scarlatina spread?
When should I take my baby to the ER?
Can scarlatina be prevented?
When can my child return to daycare?
Sources
All content follows our editorial policy and is reviewed against published clinical guidelines.
2,705 evidence-based guides6 authoritative medical sources
Related Illnesses
Bottom line
Scarlet Fever in Children is treatable with appropriate medical care. Seek emergency care if difficulty breathing or swallowing.
Trust your instincts. If something feels wrong, reach out to your pediatrician. Worrying about your baby means you care — that is a good thing.