Mum has PSP and is really awful at the moment. Hospice consultant has put up a morphine driver and last week they done bowel preps to try and ease the chronic constipation and pain that she is in. The morphine isn't really killing all the pain. Its horrible to watch her in so much pain. How do you know what stage in this horrible illness you are at. Not sure if I can watch her go through much more it is heartbreaking.