Laser light therapy was a Godsend for the frozen shoulder. It was hell on earth with the pain and lack of function for the shoulder for almost two years. After two sessions of laser light therapy per week for a month, there was significant ease of pain and shoulder movement. I now have full function of the shoulder and no pain. Every once in a while I feel a twinge in that shoulder and I go and have a laser light treatment (through my Chiropractor).