Brain Zaps

I was shot in the head and subsequently developed a seizure disorder. I stopped taking my keppra 7 years ago. I had what felt like a buzzing, electromagnetic pulse wave in my brain starting with a soft buzz intensifying to a strong current before completely dropping off. It was a smooth escalation, like a dial being turned up, and it took place in less than 1.5 seconds. I have not and am not taking any meds at all so it's not withdrawal. But over the last several days I've had multiple events like this, though not with the matched intensity of the first. The frequency has increased and on demand I can scan my eyes from side to side and make the initial buzz start up. I am not stressed ordealing with anxiety but I was watching a dog desperately cower away from a man and realizing the abuse it had undoubtedly suffered made a strong "zap" come over me. That's the only instance I remember thinking or doing anything in particular. How much worse are these going to get? Does anyone else have these without antidepressant withdrawal symptoms. Has anyone found relief? It has become a burden and all within 4-5 days.