what is an interferential unit
With tens or interferential one can use the unit anytime there is pain present. If using tens or interferential and its difficult to sleep, due to pain, then wear the unit all night long if it helps the pain go away and one can sleep.ith tens or interferential one can use the unit anytime there is pain present. If using tens or interferential and its difficult to sleep, due to pain, then wear the unit all night long if it helps the pain go away and one can sleep.