Hemorrhoids are swollen veins in the lower rectum and anus. The veins around the anus stretch due to increased pressure in the lower rectum e.g. pregnancy, being overweight or straining during bowel movements. It eventually leads bulging or enlarged vessels in the anus. Hemorrhoids might develop in different locations at the same time. Classified by locations, there are 2 types of hemorrhoids:
- Internal hemorrhoids: Internal hemorrhoids lie inside the rectum and are covered with cells that line the rest of the intestines. They are deep inside the rectum and not visible from outside. Without complications, they do not usually produce rectal pain, discomfort or irritation in the anal region. However, the hemorrhoids might protrude through the rectum from strain during bowel movement.
- External hemorrhoids: External hemorrhoids are hemorrhoids that affect veins outside the anus. External bulges can be visibly seen and touched around the anal area. They are covered with cells that resemble skin, typically slightly less pink than the surrounding skin. Due to the irritation of surrounding nerve, symptoms might include pain or discomfort, itching or swelling around the anus and rectal bleeding that might be found during defecation.
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