You can massage the coconut oil on the affected area after a bm and 4-6 times daily. You can also massage it on his back since it is a mild anti inflammatory. I would also watch his diet. An acid based diet could be irritating his bowels and exacerbating the sores. Make sure you get a decent extra virgin or virgin coconut oil from the health food store or online (Nutiva, Jarrow, Tropical Traditions, Wilderness Family Naturals etc)