Case Presentation: A 48-year-old female with Hashimoto’s thyroiditis (on Synthroid), prediabetes, and active tobacco use (30 pack-years) who exercises daily presented to the ER with chest pain after a high-intensity workout. The pain radiated to her left arm and neck and intensified to 10/10, associated with palpitations.On exam, she had cool extremities and diaphoresis. Vital [...]