I cannot speak for Rich, but the nettles are used by whacking yourself with fresh nettles to get the “sting”. It increases blood circulation. I doubt anyone would only do this. One of the more effective treatments for Bell’s Palsy (especially if caused by Lyme disease) is oral use of methylcobalamin. I use herbs internally as well for this condition (St John’s wort, Mullein root, Prickly Ash).