A 43-year-old woman presents to the ED in the state of Michigan with a 1-week history of intermittent headache, nausea, and fatigue. She was seen at her private doctor’s office 1-week ago along with her husband and children, who also have similar symptoms. They were diagnosed with a viral syndrome and told to increase their fluid intake. She states that the symptoms began approximately one week after Thanksgiving. The symptoms are worse in the morning and improve while she is at work. Her BP is 123/75 mm Hg, HR is 83 beats per minute, temperature is 98.9°F, and O2 saturation is 98% on room air. Physical exam is unremarkable. You suspect her first diagnosis was incorrect. Which of the following is the most appropriate next step to confirm your suspicion?
a. Order a mono spot test
b. Perform a nasal pharyngeal swab to test for influenza
c. Consult psychiatry to evaluate for malingering
d. Order a carboxyhemoglobin (COHb) level
e. Order a lead level
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quizzER is a weekly contest consisting of a question selected from various areas of emergency medicine that are central to the education of medical students and residents in training.
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