Question

what is the most common inflammatory polyarthritis affecting young men?
ankylosing spondylitis
psoriatic arthritis
rheumatoid arthritis
reactive arthritis

Explanation:

Ankylosing spondylitis is more prevalent in young - men among these inflammatory polyarthritis types. It often affects the spine and sacroiliac joints. Psoriatic arthritis is associated with psoriasis, rheumatoid arthritis affects both genders more evenly, and reactive arthritis is triggered by an infection.

Answer:

Ankylosing spondylitis