Hi
I assist one of my clients who suffers with Hemiplegic Migraines and she was initially awarded enhanced rate care which since her review assessment has been reduced to standard.
I am currently arguing the decision to reduce her award.
Keep a diary of the attacks; their frequency; severity; how long they last etc and base your application on the affects prior to, during and after the attacks.
I also obtained supporting statements from those closest to her that witnessed and supported he through them.
With the law change relating to 'risk of harm' CPIP/1599/2016 this should also help as the attacks can be w/o warning and a severe risk to the claimants safety, as with epilepsy, so you could be awarded points which were previously not given.
Hope that helps if still in the claiming process.