Most anal fissures heal after a few days or weeks. Use of stool softeners or laxatives, sitz baths, or nonprescription creams can aid in healing. However, if a fissure does not heal after 8-12 weeks, it is considered a chronic fissure and may require additional treatment. Prescription medications may be required or even surgery, which is most often lateral internal sphincterotomy.
For more on anal fissures, read here.
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Cite this: Richard H. Sinert. Fast Five Quiz: Can You Answer These User-Requested Questions About Sexual Intercourse-Related Injuries? - Medscape - Aug 05, 2015.