Case The patient is a 52-year-old man who presents to your urgent care center with lightheaded dizziness, which he says has been present for the past 3 days. It is worse with standing. He reports that he has been spending a lot of time in the sun lately. He denies chest pain, shortness of breath, abdominal pain, or paresthesias. He does not take any medications. His personal medical history untreated hypertension, and there …
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