Review Question - QID 213561

A 27-year-old man presents to the physician with concern for pain in both of his knees that he is unable to attribute to any activities that he has recently performed. He had an acute episode of diarrhea 2 weeks ago, prior to the onset of symptoms. He has also been experiencing a burning sensation during urination for the past week. When questioned about any other symptoms, he notes that he has also noticed that his eyes occasionally feel irritated and painful, leading to bouts of blurry vision. On physical examination, the patient is afebrile and has conjunctival injection surrounding the iris. A synovial fluid aspiration of the knee is performed and reveals a white blood cell count of 51,000/µL. Which of the following is the most appropriate treatment for this patient’s condition?