<s>[INST] hi there I was 19 and had like nerve pain which would stay there for 2-3 seconds and go away.it felt like electric shock.over the year the pain started to stay longer and more in winter .i was 31 and because of pain , i couldn t walk or even turn my side, it was impossible to get out of bed on my own , then i went to doctor and she said it was ankylosing spondylitis(AS).the pain was more in hip. got my cortisone injection but it didn t help.she mentioned me having an extra bone growth (that might be the reason i used to feel a stabbing knife ) but after mri was done, my doctor says it is not AS.she said it was condensi illii which was due to child birth(at age of 19).. but i am still having the same problems, i m on mobic tablets that helps partially but i m curious and worried why did my doctor ruled out that extra bone growth. [/INST] Hi you are probably having Condesans Illi of Sacroiliac joint both sides. Your symptoms can be explained by this disease . Sometimes condensans is part of Ankylosing spondylosis. Unfortunately there is no definite treatment for both the conditions. Anti inflammatory Pain killers and some disease modifying drugs may help in relieving pain and containing disease, </s>