26th April 2024

A 10-year-old boy has been experiencing pain and swelling in both wrists and his left ankle for the past 2 months.

A 10-year-old boy has been experiencing pain and swelling in both wrists and his left ankle for the past 2 months. He also reports morning stiffness that lasts for about an hour. His mother mentions that he has been more reluctant to participate in sports, which he previously enjoyed. There is no significant family history of joint diseases or autoimmune conditions, and he has not had any recent infections. On examination, there is visible swelling in the affected joints with slight warmth, but no redness. The range of motion is restricted due to pain.

Which is the most likely diagnosis?