The best treatment for exterior, is mild hot soaks, try three soaks a day if possible, the reason they take so long to heal is because the muscle tissue in that area keeps blood from flowing to it, this retards healing, when you sit in a hot tub,it relaxes the muscle and allows better blood flow and it tends to
heal much
quicker. You should soak for a minimum of twenty minutes. three times a day, or at least twice per day one morning and one at night, but three is best.