I am really sorry to hear what you and your husband have been dealing with. If I were you, I'd see a neurologist, ask for an EEG (and possibly an MRI, if it is necessary). In addition to describing symptoms (i.e. clinical visit) an EEG is the first step in determining if your husband may have epilepsy. If the neurologist does not think he has epilepsy, at least it's something you've ruled out. From personal experience, the EEG is really important, as well as getting a second opinion on the matter. That helps a TON. Anyway, you have nothing to lose.
Good luck to you