Expert Hemorrhoid Care at Swift Vein and Vascular, Bronx, NY

What are Internal Hemorrhoids?

Internal hemorrhoids represent a common issue involving the distension of vascular cushions situated within the lower rectum and anal canal. Positioned above a nerve-poor region, these hemorrhoids often present without significant pain, making bleeding the most frequent symptom, typically seen as bright red blood during or after a bowel movement. Other signs can include itching or a feeling of fullness, and in more advanced stages, they may prolapse, extending outside the anal opening.

Unlike external hemorrhoids, internal hemorrhoids are generally not associated with significant pain because they originate from a region with few pain receptors, presenting pain only if they become thrombosed or severely prolapsed. While various treatment options exist, including conservative measures and traditional procedures, minimally invasive interventional radiology approaches, such as Hemorrhoidal Embolization, are increasingly being utilized to effectively treat internal hemorrhoids by targeting the problematic blood supply.

Swift Vein and Vascular offers state-of-the-art, minimally invasive treatments designed to address the underlying vascular issues contributing to internal hemorrhoids.

Symptoms of Internal Hemorrhoids

Internal hemorrhoids often manifest with symptoms that, while sometimes disruptive, may not necessarily include pain due to their location within the anal canal above the pain-sensitive area. The presence and severity of these symptoms are generally related to the size and degree of prolapse of the internal hemorrhoids.

• Painless rectal bleeding: The most common and often the first noticeable symptom is the appearance of bright red blood from the rectum. This bleeding is typically associated with bowel movements and is painless. It may be observed on toilet paper, mixed with stool, or dripping into the toilet bowl.
• Hemorrhoidal prolapse: Internal hemorrhoids may descend or push out from the anus, especially during straining with a bowel movement. This prolapse can range from occasionally protruding and reducing spontaneously (Grade II), needing to be pushed back in manually (Grade III), to remaining outside the anus permanently (Grade IV).
• Anal itching (pruritus ani): While less direct than bleeding or prolapse, itching around the anal opening is a common symptom, often due to irritation from mucus or moisture associated with internal hemorrhoids, particularly when prolapsed.
• Mucus discharge: Internal hemorrhoids can sometimes secrete mucus, which can lead to dampness and contribute to the sensation of itching or irritation in the anal area.
• Sense of fullness or lump: A feeling of something protruding from the anus or a sensation of incomplete emptying after a bowel movement can occur, particularly with larger or prolapsed internal hemorrhoids.
• Absence of significant pain: Unlike external hemorrhoids, internal hemorrhoids are generally not painful because they originate from a region with limited pain receptors. Severe pain is usually indicative of a complication like a blood clot (thrombosis) or strangulation.

Causes and Risk Factors

The development of internal hemorrhoids is primarily linked to conditions and activities that increase pressure within the veins located in the lower part of the rectum and anal canal. This elevated venous pressure, combined with a potential weakening of the supporting tissues over time, causes the vascular cushions to swell, enlarge, and sometimes prolapse. Several lifestyle habits, medical conditions, and other factors can contribute to this increased venous pressure and strain on the supportive tissues.

• Straining during bowel movements: This is a very common cause. Excessive force used to push out stool, often due to constipation, significantly increases pressure within the rectal veins, leading to swelling and stretching.
• Chronic bowel irregularity: Both persistent constipation (hard stools requiring straining) and chronic diarrhea (frequent, watery stools) can irritate the anal lining and contribute to venous pressure issues, increasing the risk of hemorrhoids.
• Extended periods of sitting or standing: Maintaining the same posture for prolonged durations, particularly sitting on the toilet, can impede blood flow and increase pressure in the rectal veins.
• Pregnancy and childbirth: The weight of the fetus puts pressure on the pelvic veins. Hormonal changes during pregnancy can also relax supporting tissues. Straining during labor further increases pressure, making hemorrhoids common during and after pregnancy.
• Obesity: Carrying excess body weight leads to increased pressure within the abdomen, which in turn exerts pressure on the veins in the rectal area, promoting hemorrhoid formation.
• Low-fiber dietary intake: A diet lacking in sufficient fiber contributes to constipation and harder stools, necessitating more straining during bowel movements, thereby increasing hemorrhoid risk.