Here is the Mayo Clinic link for Ankylosing Spondylitis.
I think my original post about AS on my home page covers most of the basics. I’ll just give a brief description here. It is very rare, especially in women. At least I can say without a doubt that I’m special, right? The diagnosis has to be confirmed with genetic testing for a gene called HLA-B27. If you have this gene you are at a significantly higher risk of developing this and other diseases. This gene occurs in about 8% of Caucasians and if you have the gene you are 88% likely to develop some of the diseases that it is known to cause. Oddly enough one or both of my parents has to carry this gene but for some reason neither of them nor any of my siblings are showing signs of this disease. Thank goodness, I wouldn’t wish it on my worst enemy. Having this gene also increases my risk factors for many other auto-immune diseases. Well DUH, if you’ve been reading my blog that has obviously become apparent!
Does Your Journey Seem Long? 
I never ever heard of ANKYLOSING SPONDYLITIS until a high school friend recently read my Blog and emailed me explaining his diagnosis of ankylosing spondylitis. He told me to google it as it was difficult to explain. I couldn’t believe what I read, it brought tears to my eyes. My question to you is how are you really doing?
You are so sweet to ask. I will admit, it is NOT fun! Most days are filled with pain and frustration but, not to sound trite, I’m really learning what I’m made of. I’ve learned that I’m capable of enduring things that I never before thought possible. Thanks for taking an interest, it means a lot. I love your blog, I find it very inspiring!