E-Fizz
APPEAL!!!
Are you epileptic, or is your problem a random one? For example, I know that an epileptic having seizures/convulsions, may not drive a car UNTIL they have been free of such 'fits' for 2 years.
With this in mind, surely there must be some similar rule for flying.
Get another opinion - see a neurologist if necessary, (privately if you can, for speed), and get him/her to write you out a report detailing the fact you have been convulsion free for 5 years.
Best of luck
FD