Haemorrhoidal tissue(cushions) are normal tissue in the anal canal and very lower rectum, that swell at times and then collapse as stool presses on them passing through. The tissue is underneath the lining and made up of some muscle fibres and some blood vessels. When this tissue causes symptoms such as bleeding and sliding out, it is called “haemorrhoids”
Very common. They can cause symptoms in about 5% of the population, but can be present in up to 20% of the population.
No they cannot. Bleeding from the bottom can be from haemorrhoids or sometimes cancer however.
Yes, however if there is bleeding or a lump you must get checked by your doctor.
There are several over the counter ointments and suppositories for haemorrhoids. Most have anti-inflammatory and local anaesthetic components. Proctocedyl, Rectinol, Soovit are some commonly used ointments.