Internal haemorrhoid

Internal haemorrhoids become complicated more often than external haemorrhoids.

They may only present with itching or bleeding. When they descend through the anal canal and become exteriorised, however, they form a"bunch" of very painful haemorrhoids in the anus. The phenomenon may be intermittent - for example a person opens their bowels - or permanent. The internal haemorrhoids can also be imprisoned by the sphincter. This then produces a strangulated haemorrhoid, a surgical emergency in its own right.