The anal fissure is an elongated tear in the mucous membrane of the anal canal and is therefore also called anal fissure. An acute anal fissure usually heals by itself. If there is a chronic anal fissure, times without symptoms alternate with times when the symptoms recur.
The term fistula is generally used to describe a tubular duct that has developed as a result of a disease process. An anal fistula has an inner opening in the rectum or anal canal and usually also an outer opening in the area of the skin around the anus. It is therefore a kind of tunnel from the inside to the outside.
In contrast to deep vein thrombosis (DVT), vascular blockage in analthrombosis is not life-threatening because the clotted blood is not washed into other vessels (embolism). In many cases a treatment is not necessary at all and waiting and observing can already be the best therapy.
Haemorrhoids (Greek = blood flow) are erectile tissues and are located on the outer part of the intestine, near the anus. Every human being has this well supplied with blood, ring-shaped tissue cushion - also called haemorrhoidal network. It has a very important task: the sealing of the intestine to the outside.
Coccyx fistulas are often caused by ingrown hair or hair that falls off the body and is massaged in by the movements of the buttocks. A preventive measure to prevent the disease from developing in the first place is permanent hair removal from the buttocks with a diode laser.