Consider that others will be writing about their broken bones, bone marrow transplants, organ donations. But you know, you’ve had eczema 
. Just put that in perspective when you consider the reader receiving thousands of these and you want to stand out.
Mostly you should find another topic because an ailment does not define you. Pls see http://talk.collegeconfidential.com/college-essays/1899933-my-generic-reply-to-almost-every-essay-topic-review-request.html#latest
and send me a draft if you want to.