Review Question - QID 212838

A 27-year-old woman presents to the emergency department for pain in multiple joints. She states that she has had symmetric joint pain that started yesterday and has been worsening. It is affecting her wrists, elbows, and shoulders. She also endorses a subjective fever and some fatigue but denies any other symptoms. The patient works as a schoolteacher and is generally healthy. She is currently sexually active with 2 male partners and uses condoms occasionally. Her temperature is 100°F (37.8°C), blood pressure is 122/85 mmHg, pulse is 88/min, respirations are 14/min, and oxygen saturation is 99% on room air. Her laboratory values are within normal limits. Physical exam is notable for joint stiffness and pain in particular of the metacarpophalangeal (MCP), proximal interphalangeal (PIP), and the wrist. The patient is discharged with ibuprofen. Four weeks later, the patient follows up at her primary doctor and notes that her symptoms have improved and she is no longer taking any medications for symptom control. Which of the following is the most likely diagnosis?