Internal Hemroids

Internal hemroids are caused by enlargement of internal veins above the anus (above the level of the pectinate line).  Internal hemroids are not visible externally and can not be felt by fingers because they are hidden inside the anus.

The main complaint of internal hemroids is anal bleeding where blood comes with stools on defecation. Pain is usually absent or minimal and no mass can be seen or felt around the anus.

So, diagnosis of internal hemroids is more difficult than external hemroids and may require some investigations like endoscopy (anoscopy, proctoscopy, or colonscopy) to confirm the diagnosis.

Sometimes, and in the more advanced cases of internal hemroids, the swelling is prolapsed through the anus forming what is called prolapsed internal hemroids and in this case, the hemroids become visible by the eye protruding from the anus and pain becomes more severe. Prolapsed internal hemroids are the only cases of internal hemroids in which the hemroids appear externally.