Streptococcal scarlet fever is an upper respiratory infection caused by group A streptococcal bacteria, commonly affecting children ages 4-8. It has an incubation period of 3-6 days and is highly contagious, spreading through airborne droplets or contact. Symptoms include fever, vomiting, sore throat, and a diffuse rash that appears 24 hours after fever. Diagnosis is usually clinical but can be confirmed with throat culture, serology tests, or Dick testing. Complications can include rheumatic fever, ear infections, and kidney problems.

1. To
streptococcal scarlet fever
presenter: abdullah raafic

2. Streptococcal scarlet fever
• Definition:
is an upper respiratory infection
associated with a characteristic rash,
• Etiology:
– GAS(group A streptococcal infection)
– Specially streptococcal pyogen
– Common individuals who do not
have antitoxin antibodies.

3. • Epidemiology:
common in children aged 4-8years .
common in late winter & early spring ,
Has 3-6 day Incubation period.
males & females are affected equally.
• Transmission:
– Highly contagious
– streptococcal bacteria can spread from
person to person by breathing in
airborne droplet from infected person’s
coughing or sneezing .
– contact of sharing contaminated
Streptococcal scarlet fever

4. Streptococcal scarlet fever
• Pathogenesis :
 Adherence to epithelial cells.
Erythrogenic toxin,
Streptokinase
Hyaluronidase
M protein
• Sing and symptoms :
– Fever: 39 c0, 1 week
– vomiting & headache
– pharyngitis: red exudation sore.
– 24hr after fever, diffuse erythema
– Dysphagia

5. Streptococcal scarlet fever
• Combined signs :-
 Circumoral pallor
 Pastia’s lines
 raspberry
 tongue strawberry
 Tachycardia
 desquamation
 Exanthema

6. Streptococcal scarlet fever
 Diagnose:
– clinically
– Throat culture .
– Serology
o Positive antistreptolycin0
– CBC
o leukocytes
– Dick test
Differential diagnose:
•Measles
•rubella
•Kawasaki disease
• EBV

7. Streptococcal scarlet fever

8. Streptococcal scarlet fever

9. Complications:
•Rheumatic fever
•Otitis media
•Glomerulonephritis
Streptococcal scarlet fever