41-yr-old male with 6 month history of joint pain, severe diarrhea and low back pain

[ays_quiz id=’33’]

 

A 41-yr-old male with a 6-month history of joint pain reported to the OPD with the worsening condition for the past 3 months. The affected lower limb joints were the knees, ankles, and joints of the feet. Can you find out the final diagnosis of the case?