Make sure his bedding is cotton, not polyester cotton, same goes for his pyjamas, shirts, etc. Try to cut all man made fabrics to a minimum. Sleeping on a towel is tempting but often makes it worse for some reason. It is a shame the acupuncture wasn't successful - it works well for some people although obviously you have to keep having it regularly. Until recently, our hospital cancer centre provided free acupuncture to men on HT and I think some local hospices still do it.