We can't diagnose you here. You should see a physician and/or a psychologist/psychiatrist for a diagnosis.

But I can tell you I don't think it's epilepsy. I don't know that for sure, and I don't know a lot about epilepsy, but the symptoms don't really sound like what I know of epilepsy.

As for the handwashing, it's possible you have obsessive compulsive disorder (OCD).