Case Presentation: A 55-year-old female with a history of renal cell carcinoma treated with left-nephrectomy and Pembrolizumab-immunotherapy presents with complaints of weakness, orthostatic hypotension, nausea, and vomiting with food aversion. She had been admitted with similar complaints 9 times since her left nephrectomy, each time having received full workups including extensive sub-specialty evaluations including cardiology, [...]