Hi Deb, sorry to hear your down in the dumps right now. I noticed that when the muscle relaxers wear off the pain causes me to tense up. I have to actually make myself unclench the muscles.

Sometimes I dont even realize im that tight.

I dont think it is rebound as much as your body getting tense after the effects wear off. But then again im not a doctor lol. You might ask your doc next time your there about. Let us know what the doc says, probably lots of others here with similar problem.