Q. A 58-year-old woman comes to the physician’s office for a low-grade fever, fatigue, and pain in her shoulders and hips for the past 1 month. She complains that she is finding it too difficult to get dressed up in the morning because her joints are very stiff and not able to move freely. She is finding it hard to sleep at night due to painful joints and she also has lost 3 kg of her weight recently. Her symptoms didn’t subside with painkillers. She is a known diabetic for the past 5 years and is on regular treatment. Her temperature is 100.1°F (37.8°C), heart rate is 86 beats per minute, blood pressure is 130/80 mm of Hg and respiratory rate is 14 per minute. Physical examination shows decreased active range of motion of her shoulders and hips without any muscle tenderness. Strength is 5/5 in all four extremities. Neurologic examination is nonfocal. Lab investigations are shown in the table below. Which of the following is the best next step in this patient’s management based on her clinical features?