Haemorrhoids

First-degree:
First-degree haemorrhoids show inversely during an endoscopy slightly enlarged vessels.
Second-degree:
Second-degree haemorrhoids escape outwards through the anal canal during pressing and slide back spontaneously.
Third-degree
Third-degree haemorrhoids persist externally and they are reponitive.
Fourth-degree
Fourth-degree haemorrhoids are not reponitive.