What is Fissure?

Ever so often a fissure is mistaken for piles. Fissures can occur in anyone, but are more common among middle aged and young adults.Fissure is a tear or ulcer in the lining of the anal canal which could cause bleeding. Anal fissures usually extend from the anal opening and are usually located in the posterior midline. Superficial or shallow anal fissures look much like a paper cut.


Anal fissures are either acute or chronic.

  • Acute fissures occur with a sudden onset and heal within 2 weeks
  • Chronic anal fissures generally fail to heal within 8 weeks.

Anal fissures can also be defined by location. Most of these are located at the back (known as posteriorly), although they can also be located at the front (anteriorly) or at the sides.