I wrote about how my heart condition inspired me to go into medicine and wrote about it in my personal statement. While I do think inspiring, unique stories will help you stand out and be remembered, be prepared to answer some pretty blunt questions about your health condition when you get interviewed (I did). Schools want to make sure you can handle a career in medicine before letting you pursue one. While I doubt they will or are even allowed to discriminate on those grounds, unless you don't meet their "technical requirements" (the physical abilities you must possess to go to their school), do make sure that you speak of your disability in an inspiring, positive light; do NOT victimize yourself or try to use it as an explanation for any bad grades. Med schools want strong applicants; trying to garner pity points will not work in your favor.