While I agree that you absolutely need to see a psychologist or psychiatrist as soon as you can, it does strike me as unusual that you have these attacks so rar

While I agree that you absolutely need to see a psychologist or psychiatrist as soon as you can, it does strike me as unusual that you have these attacks so rarely and they involve losing consciousness or memory, followed by bad headaches. That doesn't sound like typical rage issues. For that reason, you should definitely also see a neurologist; these attacks may actually be some kind of partial seizures.