Your list of symptoms sounds verbatim like one I could have written 2 months ago when they first hit me. Mine aren't as bad now...they've calmed down A LOT, but are still there. Sometimes they go away for a day or two altogether...which is a real blessing! Mine are mostly in my feet, and calves, but I have had them sometimes in my quads, triceps, biceps, neck, shoulder girdle, cheek, eyelid. Mine aren't constant....maybe every 5-10 minutes...maybe every 30 minutes. I have pretty much given up trying to find a pattern for prediction, and have resolved myslef to the fact my system is FRIED.
Couple things to take note of:
1. Make sure you stay VERY hydrated as lack of water intake can and will cause muscle twitches...this has helped me a TON.
2. Make sure you're supplementing with Calcium Citrate, Vitamin D-3 and Chelated
Magnesium, and maybe even some Vitamin B-12, as a deficiency in anyone or any combination of these will cause muscle twitches and spasms. I read the other day where something like 70% of the pop. is deficient in Magnesium and Vit. D. (which should be taken together by the way). Talk with your Doc about this first of course.
3. Start a daily meditation routine. here's the one I do on a daily basis...it's awesome, I feel like I could sprout wings and fly when I am done! http://www.freewebs.com/healing-israel/koicarp.pdf
4. And most importantly realize these are not harmful in anyway....take the fear, anger and emotion out of the symptom and you'll find they are much easier to manage. This is something we can all get better at!
5. If you don't already start an exercise program, because it will help you sleep better at night if you expend some energy during the day. I Mountain Bike about 12 miles everyday at lunch, and I can tell a MONUMENTAL difference in my sleep quality if I layoff for a few days. The other night I was tossing and turning around 3am and my wife rolls over with this ticked off look on her face (because I woke her up), and goes "I don't care how bad the weather is, would you please ride tomorrow so I can get some sleep"
As for the muscle jerks before sleep...no worries, my wife and son do the same thing...completely normal and everyone does it. My wife gets annoyed when I ask her if she knows she's twitching when she's falling asleep. She answers, "I have no idea...I don't care, please shut up"
Ahhhhh....what it must be like to not give a !*#$ what goes on inside your body.