Internal haemorrhoids occur in the lower rectum while external haemorrhoids affect the skin around the anus. Internal haemorrhoids are mostly painless, even when they result in rectal bleeding. But internal haemorrhoids can prolapse (extend beyond the anus), causing more irritation and pain. If external haemorrhoids have resulted in a clot, they can be especially apparent. This procedure is used to treat prolapsed internal haemorrhoids by stapling them back into their normal position.

Source: Standard Digital March 15, 2020 06:22 UTC