Morphine Sulfate SR and sleeping habits

I do get the difficulty in swallowing... not on a regular basis... but at night... as I am falling asleep... I also experience... spikes in appetite and horrible sleeping habits.. but... my main concern is numbness in my hands... I am taking Morphine Sulfate.... 100mg every 12 hours... and 10mg... (for severe spikes in pain) 1-2 every 4 hours, as required. I have stuck to the every 12 hour pill diligently... and I take the 10 mg as required ~ approximately 6-8 every 24 hours.

I have be on several different pain meds the past year or so and approximately 1 week maybe sooner after starting the Morphine I starting experiencing numbness in both hands... It is driving me insane. My Dr. has prescribed arm braces for when I sleep... to keep my wrists straight... Hence... Carpul Tunnel.. Is this Morphine related???

And... is rehab in my future after surgery and recovery... ???