I have a mix between cataplexy, sleep attacks, and sleep drunkness, between the three it happens several times a day. It's the cataplectic episodes that are rated analogously with seizures. To get the 80% you have to have been observed having them several times. I believe it's any symptoms like sleep attack or cataplexy that counts as a seizure. But you have to have several of them I believe more then 10 a week to get 80%. For what it's worth I was rated 80% on just this one disorder, so its definitely not impossible, good luck.