Anal fissure
Patients should not postpone going to the toilet. While waiting, the faeces will push on the circular muscle of the anus, which causes a pressure. Besides the faeces can become harder and get more volume after a while. When the patient feels the urge to go to the toilet, the best thing is to go immediately. While sitting on the toilet, the patient has to press as little as possible, but instead relax the circular muscle.