Updated Feb 02, 2021 | 08:44 IST A 22-year-old woman who couldn't stand without assistance or even sleep for more than half an hour due to complex regional pain syndrome (CRPS) has been finally cured. Ruby couldn't stand without assistance or even sleep for more than half an hour. | Photo Credit: Facebook A woman who was prevented from sleeping due to increasing debilitating pain since she was just eight years old as a result of complex regional pain syndrome (CRPS) has been finally cured. Ruby Chamberlain, from Houghton-on-the-Hill, Leicestershire, felt the pain for the first time in her left foot. It gradually spread across her lower body to a point where she couldn't stand without assistance or even sleep for more than half an hour.