Pastia’s lines are:
Correct Answer: Transverse red streaks in skin folds seen in scarlet fever
Description: Streptococcal scarlet fever:
Group A (or occasionally groups C and G) streptococci causing pharyngitis, tonsillitis or other infection may lead to scarlet fever, if the infecting strain produces a streptococcal pyrogenic exotoxin. Scarlet fever is most common in school-age children, but can also occur in young adults who have contact with young children. A diffuse erythematous rash occurs, which blanches on pressure, classically with circumoral pallor. The tongue, initially coated, becomes red and swollen ('strawberry tongue'). The disease lasts about 7 days, the rash disappearing in 7-10 days, followed by a fine desquamation. Residual petechial lesions in the antecubital fossa may be seen ('Pastia's sign’).
Treatment involves intravenous benzyl penicillin or an oral penicillin plus symptomatic measures.
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