I have a very small amplitude high frequency tremor when I try to go to sleep. Usually I can barely feel this tremor but somehow it prevents sleep. An anticonvulsant (tizanisine) almost completly takes care of it. There are several other symptoms that can interfere with sleep. Usually the pain shuts down as I start to drift off but some drugs and/ or circumstances will cause the pain to get worse and prevent sleep.

The drs have done an excellent job of getting drugs which enable me to sleep. Sometimes I still have trouble.