Hello, Welcome to HCM, Anal fissure is a cut or tear occurring in the anus that extends upwards into the anal canal. Fissures are a common condition of the anus and anal canal. Anal fissures are caused by trauma to the anus and anal canal and also by a hard stool or repeated episodes of diarrhea. The following are the different modes of treatment for anal fissure Initial treatment involves adding bulk to the stool and softening the stool with high fiber diet and advised to avoid foods that may not be well-digested. Sitz baths Topical anesthetics prior to a bowel movement to reduce the pain of defecation along with the steroid cream to reduce inflammation. Oral medications like nitroglycerin to relax the smooth muscle of the internal sphincter have not been shown to aid healing. Ointments containing calcium channel blocking drugs to relax the muscles of the internal sphincter. Surgical procedure called partial lateral internal sphincterotomy is the technique of choice for the treatment of anal fissures. Thank you.