I have done some research which also indicates a TENS unit
is beneficial for nerve damage. My mother suffered a stroke
, and does not have efficient use of her right hand. Many years back, I have followed the work of Dr. Beck (electrophysiologist in the field of cranial electro stimulation).
He strongly suggested that a TENS unit can and will re-stimulate nerve damage and cause functionality to return to normal.
I am in the process of purchasing a TENS unit for my mother to use.