david in nz
                    
                    
                    
                    
                    
                    
                    
                        
                        
                        standard western medicine uses ultra violet light treatment.    I have had this for > 20 years and sometimes it spreads.. like the past 2 years.    I visit an acupuncturist trained in China and this helps.. try the electo-pads..    also  take PABA tablets.. get these from large drug store or natural herb shops    regds  david