The following are the most important diseases or complications that may be contributed to by scarlatina (scarlet fever):
Respiratory system (J00-J99)
- Peritonsillar abscess (PTA) – spread of inflammation to connective tissue between tonsil (tonsils) and M. constrictor pharyngis with subsequent abscessation (collection of pus); predictors of peritonsillar abscess: male sex (1 point); age 21-40 years and smoker; clinical findings: unilateral sore throat/severe pain (3 points), trismus (lockjaw; 2 points), lumpy voice (1 point), and uvular/palatal deviation (1 point). Interpretation: threshold at which the probability of the presence of PTA increases significantly is a total score of 4. Note: test achieved near-maximal negative predictive value and high sensitivity (percentage of diseased patients in whom the disease is detected by use of the test, i.e., a positive test result occurs), but relatively low specificity (probability that actually healthy individuals who do not have the disease in question are also detected as healthy in the test).
- Retropharyngeal abscess – formation of an encapsulated collection of pus between the cervical spine and the pharyngeal wall.
Cardiovascular system (I00-I99)
- Endocarditis (endocardial inflammation).
- Myocarditis (inflammation of the heart muscle)
- Pericarditis (inflammation of the pericardium)
- Acute rheumatic fever – inflammatory reaction against certain proteins of streptococcus serogroup A, which can lead to joint complaints, but also to heart and skin involvement; today due to sufficient antibiotic therapy rare clinical picture after pharyngitis (pharyngitis) by streptococci.
Genitourinary system (kidneys, urinary tract – sex organs) (N00-N99).
- Acute glomerulonephritis – kidney disease, with inflammation of the kidney filterlets (glomeruli).
