Internal hemorrhoids & External hemorrhoids

Hemorrhoids are part of the anal canal and can become pathological or piles when swollen or inflamed. Normally they act as cushions composed of arteriovenous channels and connective tissue that help the passage of stool. Hemorrhoid symptoms varies depending on the pathological type. Internal hemorrhoids are rectal bleeding associated with Benin and external hemorrhoids are associated with pain in the anus. They differ in position, taking into account the dentate line.

External hemorrhoids

External hemorrhoids occur outside the anal verge. They are varicosities veins that drain the inferior rectal artery territory who are also branches of the internal pudendal artery. Sometimes they can be painful and cause swelling and irritation. Many people think that itching is a symptom of external hemorrhoids but it is probably due to irritation of the skin. External hemorrhoids can become thrombosed veins if breaks and / or a blood clot occurs.

Internal hemorrhoids

Internal hemorrhoids occur inside the rectum. They are varicosities veins draining the territory of branches of the superior rectal arteries. Internal hemorrhoids are usually not painful and most people are not aware of their presence because they are in an area that does not have pain receptors.

They may bleed when irritated and have the untreated they can cause two other more severe hemorrhoids, prolapsed hemorrhoids and strangulated hemorrhoids. The prolapsed hemorrhoid is so distended that it is pushed out of the anus. The strangulated hemorrhoid occurs when the anal sphincter muscle goes into spasm and traps down a hemorrhoid outside the anal opening as a result of cancellation of the blood supply.

Internal hemorrhoids can be evaluated by the degree of prolapse:

First-degree no prolapse.
Second-degree: prolapse during defecation but reduce spontaneously.
Third-degree prolapse during defecation but must be manually reduced.
Fourth-degree prolapse and can not be manually reduced.

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