Broad Complex Tachycardia, Addison's disease, and Ascending Flacid Paralysis: An Interesting Case on Cardiology Floor

Broad complex tachycardia is a common presentation in the cardiology emergency room but is not always due to ventricular tachycardia, especially in a young patient who has other important medical illnesses and with no underlying cardiac illness. We present a case of a 40-year male who was admitted with complaints of palpitation associated with rapidly progressive weakness of lower limbs progressing to quadriparesis in about 10 hours. His clinical presentation was due to hyperkalemia and weakness due to Addison's disease. The patient was treated with drugs to lower potassium levels and steroids. His muscle power improved dramatically as potassium levels normalized and he recovered completely. Key Words: Acute flaccid paralysis, Hyperkalemia, Broad complex tachycardia.