Good morning bonumom,
I get sensations like that also. No pain, no buzzing, just as though my body is losing the ability to "feel" them. My ortho thinks it is due to my spondylitis (arthritis in my back) pressing the nerves just right. I find it happens more when I have been doing a lot of bending over or lifting. Rest and remembering to lift and bend correctly and carefully help most of the time.
Hope it gets better for you!!
"You do not have a soul. You are a soul. You have a body." C.S. Lewis