Using PENS for difficult to treat neuropathic pain
treatment, patients using PENS or TENS said their sleep had improved substantially (from a score of 6 to 3 for PENS and from 5 to 4 for TENS) but patients using sham PENS said there was no real difference. In this study, most patients (73%) rated PENS as the most 'desirable' treatment over TENS (21%) and sham PENS (6%).
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