<s>[INST] Hello doctor,My father is suffering from a small anal fissure. Can it be healed by medicine? [/INST] Hello. The first thing to promote healing is stool should be soft. For that, he should eat high fiber diet like fruits apple, banana, oranges, green leafy vegetables like spinach, raw cucumber. Avoid smoking, refined food, fatty and oily food. He should have plenty of fluids and regular exercises. Also, syrup like Lactulose 15 to 30 ml bedtime to maintain your stool soft. Second, he should have Nitroglycerin gel two times a day. Also, sitz bath will be helpful, during a sitz bath, the anus is immersed in warm water for approximately 10 to 15 minutes two to three times daily. Sitz bath kits are available in most drugstores which contains Potassium permanganate. For more information consult an internal medicine physician online --> </s>