An Anal Fissure in Ano is small oval shaped tear in skin that lines the opening of anus.
Acute fissures are usually treated non-surgical with medicines. Even chronic fissures are first of medical management. The aim of the treatment is to break the vicious cycle of anal sphincter and tearing of the anal skin.
Acute Fissures which do not heal with conservative therapy along with most other Chronic Fissures need a surgical line of treatment.