Ankylosing Spondylitis is an inflammatory arthritis affecting the spine and large joints. Severe pain through the spine starting from neck, mid back, lower back, fatigue, running low grade fevers all felt different. Consistent elevated ESR showed there is some inflammation in the body. When rheumatologist tested me it was extremely tender & painful even to touch in my lower back. I did see symptoms for quite some time where it even hurts to sit in the toilet seat. Even carrying laptop bag from parking lot to the office desk was causing so much pain in the mid back. The pain is so severe that it won’t let me sleep in any position for long in the night. SI(sacroiliac) joints X-ray showed relatively symmetric sclerosis(hardening of tissue) of the sacroiliac joints. Have not yet figured out how I am going to manage this new condition. Atleast feels better to give the pain a name than just being put in Fibromyalgia bucket.