Since there is no specific Listing for migraines, it is unlikely you'll be approved for at the Recon stage (which has only around a 10% approval rating anyway).

Unless you're age 50 or older, where the GRID Rules may apply, then you'll need to be approved using the full 5 Step Sequential Evaluation Process.

https://www.socialsecurity.gov/oidap...Evaluation.pdf

You'll want to have significant medical documentation of your functional limitations. If you're denied at the Recon stage, it would be a good idea to request a copy of your file on CD from SS (the first one is free) and after reviewing it thoroughly (some docs keep excellent records and provide thorough notes, and others don't...), you could research hiring a local attorney or non attorney rep and have him/her evaluate your case.