Credit: Getty Images Investigators speculate that a novel target of autoimmunity in LN that affects renal tubular potassium transport results in idiopathic hypokalemia in patients with LN.

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In this Journal feature, information about a real patient is presented in stages (boldface type) to an expert clinician, who responds to the information by sharing relevant background and reasoning ...

DEAR DR. GOTT: A few weeks ago, you wrote about people having leg cramps, and some wrote in and said they were putting soap under their sheets. I tried bar soap -- the small pieces from hotels, like ...