An anal fissure is a tear in the anus or anal canal lining. It's possible that the fissure will leak and cause pain. Anal fissures can affect people of all ages. As people age, their chances of developing an anal fissure decrease. People who have previously experienced fissures are more likely to experience them again.
Trauma to the anus and anal canal can result in anal fissures. The purpose of anal fissure treatment is to relieve discomfort and bleeding by softening stools and lowering pressure on the anal canal.