Hemorrhoids are not a disease you “catch” or a sign that something has gone seriously wrong. Everyone has hemorrhoidal tissue: cushions of blood vessels, smooth muscle, and connective tissue lining the anal canal. What people call “having hemorrhoids” is really hemorrhoidal disease, which happens when those cushions become abnormally swollen, inflamed, or displaced. The condition is extremely common, and while it can be uncomfortable or alarming when you notice blood on the toilet paper, it usually reflects a combination of everyday pressures rather than a deeper medical problem.
What Is Actually Happening in the Tissue
The anal canal contains three main cushions of vascular tissue, typically sitting at specific positions along the canal wall. These cushions serve a purpose: they help with fine continence control by forming a seal that assists the sphincter muscles. Problems start when the blood vessels inside those cushions dilate and the connective tissue holding everything in place begins to break down. The result is swelling, stretching, and sometimes outright prolapse, where the tissue slides downward and protrudes outside the anus.
Research into what drives this process points to two simultaneous changes. The vascular channels widen and become distorted, while the connective tissue scaffolding that anchors the cushions deteriorates.1PubMed Central. Hemorrhoids: from basic pathophysiology to clinical management Think of it like a hammock whose ropes are fraying while the load it carries keeps getting heavier. As the tissue loses structural support, it becomes more vulnerable to the mechanical forces of straining and gravity. Studies of hemorrhoidal tissue show it has unusually high levels of type III collagen compared to normal anal tissue, which points to an active remodeling process rather than simple wear and tear.2J. Coloproctol. (Rio J.). Changes in the proportions of types I and III collagen in hemorrhoids: the sliding anal lining theory
This combination of vascular swelling and tissue weakening explains why hemorrhoids tend to get worse over time if the underlying pressures are not addressed. The cushions are not just inflamed; they are structurally compromised.
What Causes Hemorrhoids to Become Symptomatic
No single factor usually accounts for hemorrhoidal disease. It is almost always a pile-up of contributing pressures, some of which you can control and some you cannot.
- Straining and constipation: Hard stools and the effort required to pass them increase pressure inside the anal canal, engorging the vascular cushions and stressing the connective tissue that holds them in place.
- Prolonged sitting on the toilet: Spending extra time on the toilet, whether reading or scrolling, keeps the anal canal in a position that encourages blood pooling in the hemorrhoidal plexus.
- Low fiber and poor hydration: Both contribute to firmer stools, which demand more straining.
- Obesity: Extra body weight increases chronic abdominal pressure, which is transmitted to the pelvic floor and rectal veins.
- Aging: Over the years, muscle mass in the anal canal is gradually replaced by connective tissue, weakening the support structure that keeps the cushions in place.
- Smoking: Tobacco use appears to contribute to hemorrhoidal disease, though the exact mechanism is less clear than for other risk factors.
These factors interact in ways that make it hard to pin blame on any single habit.3Journal of Education, Health and Sport. Hemorrhoidal Disease – The Role of Dietary, Behavioral and Lifestyle Factors in Prevention and Conservative Management Someone who eats plenty of fiber but sits at a desk all day and spends twenty minutes on the toilet might develop symptoms just as readily as someone with a poor diet but otherwise healthy bathroom habits.
The aging component deserves special attention because it is not just about years going by. The progressive loss of muscle mass in favor of connective tissue in the anal canal physically weakens the scaffolding that keeps hemorrhoidal cushions anchored.4Seminars in Colon and Rectal Surgery. Why are hemorrhoids symptomatic? the pathophysiology and etiology of hemorrhoids This is why hemorrhoidal symptoms tend to become more common in middle age and beyond, even in people whose habits have not changed much.
Pregnancy and Hemorrhoids
Pregnancy is one of the most potent triggers for hemorrhoidal symptoms, and it hits from several directions at once. As the uterus grows, it presses on the inferior vena cava and pelvic veins, slowing the return of blood from the rectal area and causing it to pool. On top of that, blood volume rises substantially during pregnancy, further engorging the vessels. Hormonal shifts add a third layer: rising progesterone relaxes vein walls, making them more prone to swelling, while also slowing gut motility and promoting constipation, which leads to straining.5IntechOpen. Hemorrhoids in Pregnancy and Breastfeeding
The result is that hemorrhoids often appear or worsen in the second and third trimesters, and the pushing phase of labor can make things significantly worse. The good news is that pregnancy-related hemorrhoids frequently improve on their own in the weeks after delivery as hormonal levels normalize and the mechanical pressure resolves. For many women, conservative measures like increased fiber, adequate water, and topical treatments are enough to manage symptoms until that natural improvement kicks in.
Internal Versus External Hemorrhoids
Where the problem sits determines what you feel. The dividing line is the dentate line, a boundary inside the anal canal that separates tissue with different nerve supplies.
Internal hemorrhoids form above the dentate line, in tissue that does not have the same pain-sensing nerves as your skin. Their hallmark symptom is painless bright-red bleeding, typically noticed on toilet paper or dripping into the bowl during a bowel movement. As they progress, internal hemorrhoids may prolapse, meaning they bulge out through the anus during straining and either slide back on their own or need to be pushed back manually.6PubMed Central. Hemorrhoids
External hemorrhoids form below the dentate line, under skin rich in pain receptors. They may cause itching, swelling, or a noticeable lump near the anus. The most dramatic presentation is a thrombosed external hemorrhoid, where a blood clot forms inside the swollen vessel. This produces sudden, severe pain and a firm, tender, often bluish lump. Thrombosed external hemorrhoids tend to occur in younger adults and have been linked to hard stools, heavy physical exertion, and even aggressive wiping habits.7Frontiers in Surgery. Management and Treatment of External Hemorrhoidal Thrombosis
Many people have both internal and external hemorrhoids at the same time, which can make the symptom picture more confusing. The combination of painless bleeding from the internal component and aching or itching from the external one is not unusual.
How Doctors Grade the Severity
Internal hemorrhoids are commonly graded on a four-point scale based on how much they prolapse. Grade I hemorrhoids bleed but do not protrude. Grade II prolapse during straining but slide back in on their own. Grade III prolapse and need to be pushed back manually. Grade IV are permanently prolapsed and cannot be reduced.8ScienceDirect (Journal of Coloproctology). “PNR-Bleed” classification and Hemorrhoid Severity Score—a novel attempt at classifying the hemorrhoids
This grading system is useful for guiding treatment decisions, but it has limitations. It focuses entirely on prolapse and says nothing about the severity of bleeding, the number of hemorrhoidal columns involved, or whether the hemorrhoids wrap all the way around the canal. A grade II hemorrhoid that bleeds heavily with every bowel movement may be more disruptive to your life than a grade III that rarely bleeds. Your doctor will consider the full picture, not just the grade.
When Rectal Bleeding Is Not Hemorrhoids
Hemorrhoids are the most common cause of rectal bleeding, which is partly why many people assume any blood they see is from hemorrhoids and never get it checked. That assumption is sometimes wrong in ways that matter.
Rectal varices, for instance, can look similar but are a completely different problem. Unlike hemorrhoids, which sit within a few centimeters of the anal opening, rectal varices can extend higher up and are associated with conditions that raise pressure in the portal vein system, such as liver disease. They behave differently on examination, collapsing under gentle pressure in a way hemorrhoids do not, and they require different treatment.9PubMed Central. Rectal varices vs hemorrhoids-diagnosis and management
Other conditions that can cause rectal bleeding include anal fissures, inflammatory bowel disease, and colorectal polyps or cancer. The key red flags that suggest something beyond hemorrhoids include blood mixed into the stool rather than coating the surface, dark or tarry stools, a change in bowel habits lasting more than a few weeks, unexplained weight loss, or bleeding that does not improve with standard hemorrhoid treatment. None of these guarantee a serious diagnosis, but any of them warrants a visit to a doctor rather than another tube of over-the-counter cream.
Conservative and Medical Treatment
Most hemorrhoids, particularly grades I and II, respond well to changes in diet and bathroom habits. Increasing fiber intake, drinking more water, avoiding prolonged toilet sitting, and not straining are the foundation of treatment. Warm sitz baths, where you sit in a few inches of warm water for ten to fifteen minutes, can relieve discomfort and reduce swelling. Over-the-counter topical treatments containing hydrocortisone or witch hazel may help with itching and inflammation in the short term.
A class of oral medications called phlebotonics, which include plant-derived flavonoids and synthetic compounds, are used in many countries to treat hemorrhoidal symptoms. They work by improving venous tone, stabilizing the permeability of small blood vessels, and boosting lymphatic drainage.10PubMed Central. Phlebotonics for haemorrhoids One well-studied formulation, micronized purified flavonoid fraction, has been shown to reduce venous inflammation and improve microcirculation through anti-inflammatory and venoprotective actions.11PubMed Central. Micronized Purified Flavonoid Fraction in Hemorrhoid Disease: A Systematic Review and Meta-Analysis These drugs are more widely prescribed in Europe and parts of Asia than in the United States, where they tend to be sold as supplements rather than prescription medications.
Office Procedures and Surgery
When conservative measures are not enough, the next step for internal hemorrhoids is usually rubber band ligation. A small elastic band is placed around the base of the hemorrhoid, cutting off its blood supply so it shrinks and falls off within a few days. It is one of the most cost-effective and commonly used treatments for internal hemorrhoids.12PubMed Central. Rubber band ligation of hemorrhoids: A guide for complications In a study of 750 patients treated with this method, roughly 93% were cured, with recurrence in about 11% over two years. Complications requiring no hospitalization occurred in about 7% of patients, mostly mild pain, minor bleeding, or brief lightheadedness.13PubMed Central. Rubber band ligation for 750 cases of symptomatic hemorrhoids out of 2200 cases
A systematic review comparing rubber band ligation to surgical removal found that surgery provides a more durable long-term cure, especially for grade III hemorrhoids, but comes with more pain, higher complication rates, and longer recovery times. Interestingly, patient satisfaction was similar between the two approaches, suggesting that many patients value a definitive fix even if it means more short-term discomfort. The general recommendation is to reserve surgery for grade III hemorrhoids or for cases where banding has failed.14Cochrane Database of Systematic Reviews. Rubber band ligation versus excisional haemorrhoidectomy for haemorrhoids
When surgery is needed, two main options dominate the conversation: conventional hemorrhoidectomy, which cuts away the hemorrhoidal tissue entirely, and stapled hemorrhoidopexy, which repositions the tissue and reduces blood flow to the hemorrhoids without excising them. Stapled procedures tend to be quicker, less painful in the short term, and associated with shorter hospital stays.15PubMed. Stapled hemorrhoidopexy compared with conventional hemorrhoidectomy: systematic review of randomized, controlled trials However, the tradeoff is a higher rate of prolapse recurrence over time. A meta-analysis found that patients who had stapled hemorrhoidopexy were significantly more likely to experience recurrent prolapse at the one-year mark compared to conventional surgery, and were roughly twice as likely to need further treatment.16JAMA Surgery. Long-term Outcomes of Stapled Hemorrhoidopexy vs Conventional Hemorrhoidectomy: A Meta-analysis of Randomized Controlled Trials The choice between the two typically depends on how advanced the hemorrhoids are, how much time you can take off for recovery, and how much recurrence risk you are willing to accept.
Does How You Sit on the Toilet Matter
The idea that squatting is “natural” and sitting on a Western toilet is a root cause of hemorrhoids has gained a lot of traction online, and there is some biomechanical basis for it. Research comparing postures has found that squatting straightens the angle between the rectum and the anal canal, which allows stool to pass with less straining.17PubMed Central. Sitting vs. squatting: a scoping review of toilet postures and associated health outcomes When you sit on a standard toilet, the puborectalis muscle maintains a kink in the rectal canal, and your abdominal muscles work less efficiently to push stool through.18PubMed Central. Health promotion and prevention of bowel disorders through toilet designs: A myth or reality?
That said, the evidence that switching toilet posture alone meaningfully prevents hemorrhoidal disease is thinner than advocates suggest. Most people are not going to rip out their toilets and install squat platforms. A practical middle ground is a footstool placed in front of the toilet, which elevates the knees above hip level and approximates some of the biomechanical advantages of squatting. It may help reduce straining, but it is one piece of a larger puzzle that includes fiber, hydration, and not treating the bathroom as a reading room.
Genetic Susceptibility
You might have noticed that some people seem prone to hemorrhoids despite reasonable habits, while others do everything “wrong” and never develop symptoms. There is growing evidence that genetics play a role. A large-scale genetic analysis identified an association between the MYH9 gene and hemorrhoid susceptibility, the same gene region linked to varicose veins of the legs.19PubMed Central. Biological findings from the PheWAS catalog: focus on connective tissue-related disorders (pelvic floor dysfunction, abdominal hernia, varicose veins and hemorrhoids) This makes biological sense: if the connective tissue and vascular structures in your veins are inherently weaker, you would be more susceptible to both conditions.
The genetic angle also helps explain why hemorrhoidal disease sometimes clusters in families and why it can appear in younger people who have none of the usual risk factors. Genetics do not doom you to hemorrhoids, but they may lower the threshold at which other factors like constipation or prolonged sitting tip you into symptomatic territory.
The Psychological Side of Hemorrhoids
Hemorrhoids are rarely dangerous, but they can be genuinely distressing in ways that go beyond physical discomfort. Anorectal symptoms carry a surprising amount of stigma. Many people feel too embarrassed to bring them up with a doctor, let alone friends or family, which leads to delayed treatment and a cycle of worsening symptoms. Research using large population datasets has found that this shame and perceived stigma can contribute to social withdrawal and even avoidance of bowel movements, which only makes the constipation and straining problem worse.20PubMed Central. Depression and anxiety symptom networks in hemorrhoid patients: evidence from the UK biobank
Chronic hemorrhoidal symptoms also affect quality of life in practical ways: difficulty sitting for long periods, reluctance to exercise for fear of worsening symptoms, anxiety about bleeding episodes at work or in social settings. These quality-of-life impacts are part of why patient satisfaction tends to be high even after more invasive procedures with longer recovery times. For many people, the relief of finally resolving the problem outweighs the temporary pain of surgery. If you have been putting off talking to a doctor because the topic feels humiliating, you are far from alone, and the condition is so common that no gastroenterologist or colorectal surgeon will think twice about it.