8th September 2020

A 24-year-old PhD student presents with a 2-week history of a painful, swollen right knee

A 24-year-old PhD student presents with a 2-week history of a painful, swollen right knee which is worse in the morning. He also complains of pain in the distal part of the right calcaneal tendon that started at a similar time. Over the past 3 days, he has developed a red, irritated eye with a watery discharge. On systems review, he explains that he has been suffering from mild dysuria for over a month but has never gotten this checked. He is usually fit and healthy and has a history of unprotected sex with multiple partners.

For the patient above, please select the SINGLE most likely diagnosis. Select ONE option from the list above.