Because of my own problems with this issue, over the years I have come up with several possibilities that may be a causative factor in creating nocturnal tremors. Keep in mind that this list is by no means complete and often there may be an overlap of these various causes:
*Food allergies or sensitivities:
Very often the things we love best or eat often can trigger a sensitivity in our autonomic nervous system (ANS) that can put it overstimulation mode especially in regard to our sympathetic, or fight or flight nervous system. Unfortunately, a large part of the medical community is terribly uniformed when it comes to nutrition and when questioned about food as being a cause for nocturnal tremors(or many other disorders for that matter)they will often dismiss it as unimportant or even state it's all in your head. Discovering which foods may be causing the problem goes beyond the scope of this post as everyone is different, but often the big offenders are wheat, gluten, dairy, coffee, sodas, chocolate, certain nuts, tomatoes and others. Again however, it can be something totally different for you and considered 'healthy' by most people. The best way to discover what the offending food might me is to simply eliminate one or two items for a few weeks and see how you feel. An internet search over food allergies and sensitivities is very useful but use some discretion as there's a lot of misinformation out there. Also be aware that as we age foods that were never a problem for us can develope into one. Food allergies and sensitivities are also implicated in other disorders such as anxiety, ADHD, colitis, arthritis, depression, etc... This is not to say that it is always the cause, but for many it can be.
*Gut dysbiosis: Again a nutritional problem where the internal flora of our intestines is disturbed leading to chemical byproducts that can wreck havoc with the brain and nervous system. An excellent book addressing this subject is Gut and Psychology Syndrome by Dr. Natasha Campbell-McBride MD, MMedSci (neurology), MMedSci(nutrition).
*Unresolved trauma or emotions: Yes, this can be a big causitive factor for nocturnal tremors and other psychological issues but in my experience it is only a part of the puzzle. The body, mind and emotions are not seperate as most of current medical paradigm treats them but are interrelated in such a way that a single, myopic approach to a problem such as nocturnal tremors is often not enough. If you are someone who has been doing therapy for years with little success you might want to look more in the nutritional direction just as someone who is nutritionally fit with unresolved emotions problems may want to see a good psychotherapist.
*Electromagnetic energy sensitivity: I don't believe this is such a great problem that many claim it to be, but for some it can.
*The wrong meds. Even if your doctor tells you it's good for you, you may have a sensitivity to a medication of any type that can causes tremors. If your doctor ignores your complaints simply find another doctor.
*Unknown thyroid disorders: There is an incredible amount of scientific research which shows that many people (women in particular) have a thyroid problem but aren't being tested properly and as such are told that nothing is wrong with their thyroid. Futher information about this mismanagement of thyroid disease can be found at thyroid.about.com Some of the symptoms of a thyroid disorder are tiredness, anxiety, disturbed sleep patterns, dry skin, depression and others.
There's more to list but since I'm not sure there will be many people reading this I will leave it at here. If more information is needed simply make a post on this site to that effect and I will list some more causes of nocturnal tremors.
Regards,
Dr. Rob