Hello, Welcome to HCM. I can understand your problem. Anal fissures occur due to tight anal sphincter tone and straining at stools. You need to take lubricant laxatives, stool softener and high fiber diet with plenty of fluids to prevent constipation as constipation and straining at stool will aggravate or prevent healing. It can be treated medically or surgically. It is treated with nitroglycerin ointment for muscle relaxation, lignocain for pain relief and antibiotics if there is infection. Surgery such as spincterotomy can be done if it does not heal by medical treatment which gives permanent relief. Hope this will be helpful. Please ask if any further question is there. Thanks for using HCM. Take care.