The causes of ankylosing spondylitis in women are related to the characteristics of women: 1. Women are prone to pelvic inflammatory disease, cervicitis, endometritis, etc. Inflammation can trigger the occurrence of ankylosing spondylitis. 2. Endocrine changes, women’s estrogen and progesterone levels change during menstruation, lactation, and pregnancy, and changes in endocrine hormones can also trigger the occurrence of ankylosing spondylitis. 3.