system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
A 48-year-old woman presented to the hospital with a headache, intermittent fevers and chills, generalized arthralgias, excessive thirst, increased fluid intake, and a progressive rash that developed on her back. Three days before seeking evaluation at the hospital, she noticed a small, slightly raised lesion appearing like a spider or insect bite on her back, which she considered to be a scab covering the affected region. The patient's fever reached 39.4°C (102.9°F) 2 days before coming to the hospital, with an intensifying burning sensation on the affected site. When a family member examined the bite, it was noticed that the bump had transformed into a circular rash. The patient took over-the-counter ibuprofen for intense pain so she could sleep through the night. The day before her hospital visit, the patient felt exhausted but managed to complete a normal workday. On the day of the hospital visit, she awoke feeling very ill, with shooting joint pains, high fevers, and excessive thirst, which led to her to seek medical attention. On physical examination, her temperature was 40.1°C (104.2°F), and there was a large circular red rash with a bulls-eye appearance (17 × 19 cm in diameter) on her back. The rest of the physical examination was unremarkable. Her past medical and surgical histories were not significant apart from a history of anaphylaxis when taking a tetracycline. She recalled a walk in the woods 3 weeks before this exam but denied finding a tick or any other ectoparasite on her body. She denied any nutritional or inhalational allergies, although she emphasized that she is allergic to tetracyclines. Based on her symptoms, medical history, and physical examination findings, the attending physician decides to institute antimicrobial therapy immediately. Which antimicrobial drug did the physician prescribe?
assistant
Amoxicillin