When they swell up they get thin. When you have a BM it irritates them making them hurt.
They can be caused by lo fiber diets, being overweight ( or pregnant),Or even standing or sitting for long periods of time. [ karenR's advice column | Ask karenR A Question ]
perfectmisstakesonlove answered Thursday March 31 2005, 11:38 pm: A hemorrhoid is actually a form of vericose vein. The veins in and around the rectum and anus become swollen. The two forms of hemorrhoids are internal and external.
Symptoms of hemorrhoids include:
Anal itching
Bleeding during bowel movements (often bright red on the paper or outside of the stool)
Pain
Protrusion during bowel movements
Sensitive lumps around the anus
A variety of reasons may contribute to the development of hemorrhoids. Some of these include:
Age
Chronic constipation
Chronic diarrhea
Pregnancy
Straining during bowel movements
Overuse of laxatives
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