Disability is a monster! I don't mean this to be discouraging in any way but it took me a couple of years, many denials and finally a hearing before I got mine, I have epilepsy. My sister, also epileptic, is going through the same thing.
What I did learn from my experience and seems to have made my sister's fight a bit shorter than mine, is to document EVERTHING! Make sure you have current copies of all of your medical records and be sure your doctor records every symptom/complaint. Nothing is too small to report. I hope that helps a little.