<prompt> Pastias lines are:The erythematous streaks seen in staphylococcal infectionTransverse red streaks in skin folds seen in scarlet feverWhite striae seen in lichen planusThe erythematous rash in syphilis  <response>: 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 Pastias sign. Treatment involves intravenous benzyl penicillin or an oral penicillin plus symptomatic measures. 