What is the typical age range for Ankylosing spondylitis?

What is the typical age range for Ankylosing spondylitis?

• A. 15-30
• B. 40-59
• C. 20-40
• D. 10-20

Answer: (A)

Ankylosing spondylitis commonly starts when people are young, usually in late adolescence to early adulthood. The majority of cases begin in the teens through the 20s, which corresponds to about 15 to 30 years of age. This early onset aligns with the typical inflammatory back pain pattern you’d expect in AS: insidious onset, stiffness that lasts for more than 30 minutes in the morning, and improvement with activity, with progression to the sacroiliac and spinal joints over time. Because of this, the age window around 15–30 years best fits the usual timeline for AS onset. Ranges such as 40–59 are less typical for the initial presentation and would suggest other conditions or later-stage changes; 10–20 is possible for some early cases but is less common; 20–40 overlaps the group but does not capture the common peak as precisely as the 15–30 range.

Ankylosing spondylitis commonly starts when people are young, usually in late adolescence to early adulthood. The majority of cases begin in the teens through the 20s, which corresponds to about 15 to 30 years of age. This early onset aligns with the typical inflammatory back pain pattern you’d expect in AS: insidious onset, stiffness that lasts for more than 30 minutes in the morning, and improvement with activity, with progression to the sacroiliac and spinal joints over time. Because of this, the age window around 15–30 years best fits the usual timeline for AS onset.

Ranges such as 40–59 are less typical for the initial presentation and would suggest other conditions or later-stage changes; 10–20 is possible for some early cases but is less common; 20–40 overlaps the group but does not capture the common peak as precisely as the 15–30 range.