Hi
It looks to me like you are pinching some nerves when you are sleeping. The nerves that effect your hands and forearms could be in your wrists, elbows, shoulders, or neck.
Here is an article about nerve impingement in the shoulder.
http://www.nismat.org/ptcor/thoracic_outlet/
There are some exercises you can try in that article as well.
If it continues, you might want to speak to your doctor about it. He/she can do some tests to see if it can be fixed. Sometimes it's as simple as having some physical therapy.
Hope that helps,
Kerry
Kerry, RN
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