MBBS (Singapore), M.Med (Surgery)
An anal fissure is a small tear or crack in the lining of the anus, the opening through which stool is
expelled from the body. It is characterized by a burning pain, itchy sensation and rectal bleeding during
and after a bowel movement. The condition affects all age groups, but it tends to be found when
constipation and diarrhea are frequent.
By itself, anal fissures are not serious, and they usually heal on their own within a few weeks. Some, however, are chronic and more serious, and may require medicines and even surgery to treat. Persistent anal fissures may also be an indication of an underlying illness such as inflammatory bowel diseases, cancer or sexually transmitted diseases (STDs).