They will have you tested for functions that would prevent you from being gainfully employed. Your doctor's diagnoses will not be the deciding factor.

You need to understand your own symptoms and be able to explain how and why you struggle to be gainfully employed. They will then verify those claims.

For example, my limitations are:

Poor memory function in both auditory and visual areas.
Inability to process and successfully follow multi-step instructions.
Sensitivity to bright/flashing lights and noise.
Inability to maintain focus for extended periods as required for an 8 hour work day.
Frequent days where I have severely reduced functions requiring additional sleep periods

There is an online medical handbook (blue book) listing symptoms and conditions that are accepted as employment limiting. The neurological section lists the seizure related dysfunctions. The mental illness section list the cognitive and behavioral dysfunctions. It will give you an idea of what symptoms are considered work limiting. Here is the link: http://www.ssa.gov/disability/profes...ltListings.htm and http://www.ssa.gov/disability/profes...dult.htm#12_01

These listings will show you what issues the SSDI people look for. Any medical documentation to support these claims of dysfunction will be helpful.

Good luck with this endeavor.

My best to you.