I can identify with what you mean when you say a "feeling" in your head. It's really hard for me to explain to people what goes on inside my head when I begin to feel the onset of a seizure. I can't stop it from happening and even though the "feeling" can't easily be described, I know exactly what it feels like to me. I think of it like a big weight. But it isn't on the outside of my head, it actually is on the inside of my head pushing out. At the same time, I get a feeling in my arms and under my chin like I'm holding a really big ball that is getting bigger and bigger. I feel panicky when the feeling gets intense, partially due to the feeling of claustrophobia and being crushed from all over. The feeling is all over in a matter of about a minute or so.
Although I learned after awhile what the character of these seizures where like, it didn't seem to make them any less intense when I was having them. What did seem to help the most was what I did AFTER it happened. I was always drained of energy afterwards and it really helped me to sit down and do some relaxation breathing.
I've read that a large percentage of people with seizures have non-epileptic seizures as well. It makes me wonder how many I've had! I'd still do the same no matter what the origin. I still have to take my meds. And the relaxation exercises help me anyways!