Haemorrhoids are swollen blood vessels in the anus. They are caused by increased blood volume and pressure from the uterus on the veins in the legs and pelvis, and are common during pregnancy. Constipation can also cause (or compound) the problem.
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http://www.encyclo.co.uk/local/20415
An abrupt swelling of a vein near the surface of the rectum (end of the bowel) or anus. In people with spinal cord injury haemorrhoids may be caused by straining to pass stools during constipation, changes in blood flow, or lying or sitting too long in one position. Symptoms include visible swelling around the anus, burning or itching (if sensation...
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http://www.encyclo.co.uk/local/20560
<anatomy, surgery> A varicose dilatation of a vein of the superior or inferior haemorrhoidal plexus, resulting from a persistent increase in venous pressure. ... Presents as a livid and painful swelling formed by the dilation of the blood vessels around the margin of, or within, the anus, from which blood or mucus is occasionally discharged.
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http://www.encyclo.co.uk/local/20973
piles
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http://www.thornber.net/medicine/html/medgloss.html
Enlarged, swollen veins which appear around the rectum and anus. In pregnancy they are caused by hormones relaxing the veins.
Found on
https://mybabymanual.co.uk/pregnancy-glossary/
Distended blood vessels (varicose veins) in the area of the anus, popularly called piles
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https://www.encyclo.co.uk/local/21221
These are swellings of the lining of the anus and lower rectum (back passage). They are also known as piles
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https://www.encyclo.co.uk/local/21536
No exact match found.
