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A 16-year-old boy presents to you complaining of throat pain and malaise for the last week. His exam is significant for multiple palpable anterior cervical lymph nodes and WITHOUT tonsillar exudates. Three days ago his mother gave him leftover amoxicillin from a previous bacterial infection, and he subsequently developed a morbilliform, papular rash over his face, neck and trunk. Which of the following is the most likely cause of his symptoms?
Correct Answer: B. Epstein-Barr virus
The Epstein-Barr virus is an extremely common cause of exudative pharyngitis and malaise in the teenage population. Additionally, 90% of those infected with EBV who take amoxicillin will develop a measles-like “amoxicillin rash,” making it the leading diagnosis after the history and physical. This same rash is also associated with ampicillin.
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Category: MicrobiologyA 16-year-old boy presents to you complaining of throat pain and malaise for the last week. His exam is significant for multiple palpable anterior cervical lymph nodes and WITHOUT tonsillar exudates. Three days ago his mother gave him leftover amoxicillin from a previous bacterial infection, and he subsequently developed a morbilliform, papular rash over his face, neck and trunk. Which of the following is the most likely cause of his symptoms?
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