An 80-Year Old Man Presenting with Fevers, Altered Mental Status, and Joint Effusions.

An 80-year-old man with atrial fibrillation, hypertension, osteoarthritis status post bilateral total shoulder arthroplasty and right hip arthroplasty, recent diagnosis of dementia, and monoclonal gammopathy of undetermined significance (MGUS), was admitted with fever, joint pain, and weakness. Prior to his first admission for these symptoms, he had been living independently at home with his wife and exercised multiple times weekly. Two months prior to the current hospitalization, he had an admission to another hospital for acute functional decline with leg weakness that had developed over the course of around two weeks, altered mental status with episodes of confusion, and fever to 102.2 degrees Fahrenheit.