Have you been screened for carpel tunnel?
Sometimes, if my spine is not aligned, I have that feeling. My chiro told me it was due to my neck and the upper back. Each person is different and perhaps you would like to have it to check out.
Happens to me all the time, not sure the cause...
I had the same experience in my right wrist after lifting something and it was carpel tunnel. I went to a hand surgeon, had surgery and it is fine now, that was more than 15 years ago
I have herniated discs in my neck and upper back and the numbness/tingling happens often in my hand...get checked out by an orthopedic doctor if possible and not a bad idea to get an MRI if necessary.
If you been typing for 20 years, carpal tunnel syndrome is very likely. I have been a medical transcriptionist for going on three years now and have already started having problems with my wrists. I would also wonder about ulnar neuropathy if it is just happening while you are laying down, though.
I have the same problem, though my arm goes numb as well at times, or my arm throbs with pain.
My doctor had ordered an MRI on my neck and I have two disks that need to be replaced, so the nerves cause all the symptoms in my hands and arms.