Several years ago, I was told I had MS and I had a friend was learing this type of massage. She said it would help me with the pain. I allowed her to use it on me. She did my feet and my hands. For two or three days afterward, I was very ill. Another friend, one who had been massaging for many years told me ( and her) that she had done too much, too vigorously for the first time and for one as sensitive as I am. She said she should have taken it much more slowly. Several of my friends who had arthritis raved about the help it gave them. The friend who had practiced it for so long a time, told me to try it on myself. You can try it on yourself and see if makes you feel better just from ordinary, everyday aches and pains. If you try it on your feet after a day of wearing shoes, you can kind of get an idea of how it feels. It is mainly a use of the thumbs in circles on the soles; and on the toes, between the fhumb and forefinger in circles down the length of each toe. It hurts a little. The harder the force, the more it hurts. It may hurt your father more than he can endure with his illness and no one but he can really answer if it helps or not. I hope my reply and those of the others helps you somewhat to decide what to do. When one is already in pain (I have Lupus) it's hard to do something that will maybe add to that pain, even if it's just a little bit.