@sueinmn Yes. The current suspect is maybe some form of brain processing problem. Maybe triggered incremently by something unknown happening overnight. The problem is that there's nothing here that they can think of to try measuring as all the usual tests are negative.

They are currently trying an experiment with epilepsy drugs in an off-label role but it is currently not having any benefit. Before anyone else thinks about this approach, I very strongly recommend discussions with medical professionals and research undertaken by yourself about whether this if worthwhile trying for you and the risks involved.

These are some serious drugs and require a strongly disciplined approach to taking them. You will need a buildup regime to get your body used to them and you really should maintain a medicine dairy. Once started, you CANNOT casually stop and restart taking them at will. You need to build up your own understanding of this so I will not be offering more advice on this - do your own research and go to your medical professionals to discuss this further if this interests you.