A Vietnamese Child with a Rash on the Back.

Previously published Photo Quizzes are now featured in a mobile app. Get more information at http:// www.aafp.org/afp/apps. A nine-year-old Vietnamese girl presented with an erythematous rash on her back that appeared suddenly one day prior. She also had upper respiratory tract symptoms, including nasal congestion, sore throat, nonproductive cough, and a fever of 102°F (38.9°C) for three days. Her history was otherwise unremarkable. On physical examination, the patient appeared acutely ill. She had erythematous nasal turbinates and bilateral anterior cervical lymphadenopathy. The lungs were clear to auscultation. There were linear erythematous lesions located on her posterior thorax (Figure 1). The lesions included petechiae and were nontender to palpation. She had no other skin lesions.