Internal hemorrhoid is a common condition where swollen veins develop inside the rectum and can cause painless bright red bleeding during a bowel movement. Many living with internal hemorrhoid also notice itching, mucus, a feeling of pressure, or tissue that slips out during straining. The early symptoms of internal hemorrhoid often come and go, and it is most common in adults, especially during pregnancy, with chronic constipation, or with aging. It may help to know that doctors have studied this condition for decades, and internal hemorrhoid is usually not dangerous or life-threatening, though ongoing bleeding should still be checked by a doctor. Treatment often starts with more fiber, more fluids, stool softeners, and avoiding straining, while office procedures or surgery are used when symptoms keep returning or are more severe.
How many people live with Internal hemorrhoid?
Worldwide and U.S. counts for internal hemorrhoids alone are not consistently reported by one standard source, because most large studies count hemorrhoids together rather than separating the internal type, so any internal-only total would be a rough estimate instead of a direct count. For hemorrhoids overall, a recent worldwide estimate suggests about 1.1 billion people are affected (Global Burden of Disease Study 2019), and the National Institute of Diabetes and Digestive and Kidney Diseases says about 1 in 20 Americans are affected, which works out to roughly 17 million people in the United States (NIDDK, 2023; U.S. Census Bureau, 2024).
Overview
Internal hemorrhoidSymptoms
Internal hemorrhoids often cause painless bright red bleeding during or after a bowel movement. Many with internal hemorrhoids also notice mucus, a feeling of fullness, or tissue bulging from the anus.
Outlook and prognosis
The outlook for internal hemorrhoid is usually good. Many people improve with fiber, fluids, and avoiding straining, though flare-ups can come and go, and ongoing bleeding, prolapse, or pain may need office treatment or sometimes surgery.
Causes and risk factors
Internal hemorrhoids often develop when repeated straining raises pressure in the rectal veins. Risk factors include constipation, low-fiber eating, pregnancy, obesity, long sitting, heavy lifting, aging, and sometimes diarrhea or a family tendency.
Genetic influences
Genetics may slightly affect the risk of internal hemorrhoid by influencing vein strength, connective tissue, and bowel habits such as constipation. Still, lifestyle and strain-related factors usually matter more than inherited genetic variations.
Diagnosis
Internal hemorrhoid is usually diagnosed from symptoms and a physical exam, often including a gentle rectal exam. If needed, a doctor may use a short scope to look inside the rectum. Diagnosis of internal hemorrhoid can also help rule out other causes of bleeding.
Treatment and drugs
Internal hemorrhoid treatment often starts with more fiber, extra fluids, and avoiding straining during bowel movements. Many also improve with warm sitz baths or medicines that ease pain, swelling, and itching. If symptoms keep coming back, office procedures or surgery may help.
Symptoms
An internal hemorrhoid often shows up during everyday things like using the bathroom, especially when you notice bright red blood but little or no pain. The changes are often subtle at first, blending into daily life until they become more noticeable. Many people do not feel much until an internal hemorrhoid becomes irritated or starts to bulge outward during a bowel movement. Because rectal bleeding can have other causes, new or repeated symptoms should be checked by a healthcare professional.
Bright red blood on the toilet paper, on the stool, or in the toilet bowl is one of the most common early symptoms of internal hemorrhoids. It is often painless, which can make it easy to ignore at first.
Some internal hemorrhoids slip down and bulge out of the anus during or after a bowel movement. You may notice a soft lump or feel tissue that goes back in on its own or needs gentle pushing back.
Internal hemorrhoids can sometimes cause a small amount of mucus or moisture from the rectum. This can leave the area feeling damp and may lead to staining or trouble getting clean after using the bathroom.
Moisture and mucus can irritate the skin around the anus and cause itching, burning, or a raw feeling. These symptoms may be more noticeable after bowel movements or after sitting for a long time.
How people usually first notice Internal hemorrhoid?
Many people first notice internal hemorrhoids when they see bright red blood on toilet paper, in the toilet bowl, or coating the stool after a bowel movement, often without much pain. Because internal hemorrhoids sit inside the rectum, the early warning signs are usually painless bleeding, a feeling of fullness or pressure, mild mucus leakage, or the sense that something has not completely emptied. If an internal hemorrhoid slips down through the anus, some may also notice a soft lump, irritation, or discomfort, especially during or after straining.
Types of Internal hemorrhoid
Internal hemorrhoids can feel very different depending on how far they have slipped down inside the rectum. Doctors usually describe the types of internal hemorrhoid by grade, from mild swelling that stays inside to tissue that remains outside. Symptoms don’t always look the same for everyone. For many, this helps explain why one person mainly notices painless bleeding, while another struggles more with a lump, mucus, or trouble cleaning after a bowel movement.
Grade 1
These are enlarged veins that stay inside the rectum and do not bulge out of the anus. They often cause bright red blood on the toilet paper or in the bowl, but usually not pain. Many living with internal hemorrhoid may only notice mild irritation or no symptoms at all.
Grade 2
These internal hemorrhoids bulge out during a bowel movement but then slip back inside on their own. Bleeding is still common, and some may feel fullness, pressure, or a brief lump that disappears afterward. Early symptoms of internal hemorrhoid are often noticed at this stage.
Grade 3
These hemorrhoids come out during a bowel movement or straining and need to be gently pushed back in by hand. Symptoms can include bleeding, mucus leakage, itching, and a bothersome feeling that something is still there. Sitting for long periods or wiping can become more uncomfortable.
Grade 4
These are prolapsed hemorrhoids that stay outside and cannot be pushed back in. They are more likely to cause ongoing discomfort, swelling, trouble with hygiene, and irritation from rubbing against clothing or skin. If blood flow gets trapped, pain can become more noticeable than with lower grades.
Can I slow down the onset of symptoms?
Yes, to a degree: while nothing is proven to completely prevent internal hemorrhoids, habits that keep stools soft and reduce straining can lower the chance that these swollen veins inside the rectum start causing symptoms. Research and long-standing medical advice support eating enough fiber, drinking enough fluids, staying active, keeping a healthy weight, not sitting on the toilet for long periods, and going when you feel the urge instead of holding it, because these steps can reduce constipation and pressure in that area. There is no well-established preventive medicine, but treating ongoing constipation early and getting rectal bleeding checked can help you deal with problems sooner; these steps may reduce risk or delay symptoms, but they cannot guarantee prevention.
What genetics can tell you about symptoms
For internal hemorrhoids, genetics does not usually predict a clear symptom pattern the way it can for some inherited conditions. Family traits may raise the chance of developing hemorrhoids at all, likely through differences in vein strength, connective tissue, or a tendency toward constipation, but genes do not reliably tell which symptoms someone will have, how severe bleeding or discomfort will be, or exactly when problems will start. In day-to-day life, symptoms are more strongly shaped by factors such as bowel habits, straining, pregnancy, aging, and long periods of sitting.
Causes and risk factors
Repeated pressure in the lower rectum often starts the problem. Common risk factors for internal hemorrhoids include straining during bowel movements, long-term constipation or diarrhea, a low-fiber diet, and sitting for long periods. Pregnancy, getting older, obesity, and regular heavy lifting can also raise the risk. Family history can be one part of the story, but lifestyle and environment add their own chapters. Knowing the causes of internal hemorrhoids can help you lower risk with more fiber, enough fluids, regular movement, and medical advice if problems keep coming back.
What are the most common causes or risk factors?
Internal hemorrhoids usually happen when there is repeated pressure on the veins inside the rectum, most often from constipation, straining during bowel movements, sitting on the toilet for a long time, a low-fiber diet, or ongoing diarrhea. They are also more common during pregnancy, with extra body weight, and as people get older, and some people may be more likely to get them because hemorrhoids can run in families.
Environmental and biological risk factors
Internal hemorrhoids are more likely to develop when pressure builds up inside the rectum or when the tissues that support these blood vessel cushions become weaker. Doctors often group risks into internal (biological) and external (environmental). Common risk factors for internal hemorrhoids include pregnancy, aging, bowel problems that cause straining or frequent loose stools, and repeated physical pressure from certain health conditions or work demands.
Pregnancy increases pressure in the pelvis and can make it harder for blood to flow back from the rectal veins. Labor and vaginal birth can add more strain, so internal hemorrhoids are more likely in late pregnancy and after delivery.
As people get older, the tissues that help hold hemorrhoids in place can stretch and weaken. This makes internal hemorrhoids more likely to enlarge or slip downward over time.
Hard stools and repeated straining raise pressure inside the rectum and can irritate the veins there. For many, this can mean the early symptoms of internal hemorrhoids begin after ongoing difficult bowel movements.
Frequent loose stools can also irritate the anal area and bring repeated pressure from urgent bowel movements. People with long-lasting bowel conditions that cause diarrhea may have a higher risk of internal hemorrhoids.
Genetic risk factors
Internal hemorrhoid often develops for several reasons, and inherited traits may play a part in some families. Some risk factors are inherited through our genes. Most internal hemorrhoids are not caused by one single gene, but the genetic risk factors for internal hemorrhoids seem to include family patterns and inherited differences in the tissues that support veins in the rectum.
Family history: Hemorrhoids can run in families, which suggests an inherited tendency in some people. If close relatives have had internal hemorrhoids, your own risk may be somewhat higher, although it does not mean you will definitely develop them.
Support tissue strength: The tissues that help hold the veins in place inside the rectum can be naturally stronger or weaker from one family to another. When those support tissues are inherited as less sturdy, internal hemorrhoids may form more easily.
Inherited vein traits: Some people may inherit vein wall features that make the hemorrhoidal veins more likely to stretch or swell. This may help explain why internal hemorrhoids appear more often in certain families even when there is no single known gene.
Rare syndromes: Uncommon inherited connective tissue conditions, such as Ehlers-Danlos syndrome, can raise the chance of hemorrhoids because body tissues are more fragile and stretchy than usual. These conditions are rare, so they account for only a small number of internal hemorrhoid cases.
Lifestyle risk factors
Several daily habits can raise pressure inside the rectal veins and make internal hemorrhoids more likely to develop or flare up. The main lifestyle risk factors for internal hemorrhoids involve bowel habits, diet, physical activity, body weight, and routines that increase straining. Understanding how lifestyle affects internal hemorrhoids can help reduce irritation, bleeding, and recurrent symptoms.
Eating too little fiber can lead to hard stools and more straining during bowel movements. That extra pressure can worsen swelling of internal hemorrhoids and make bleeding more likely.
Not drinking enough fluids can make stools drier and harder to pass. This often increases straining, which can aggravate internal hemorrhoids.
Pushing hard during bowel movements puts direct pressure on the hemorrhoidal veins. Repeated straining can worsen prolapse, bleeding, and discomfort.
Spending a long time on the toilet, especially while reading or using a phone, increases pressure in the rectal area. This habit can contribute to ongoing hemorrhoid irritation and flare-ups.
Risk prevention
Internal hemorrhoids are often linked to pressure inside the lower rectum, so prevention focuses on keeping bowel movements soft and easy to pass. Many living with internal hemorrhoids find that constipation, straining, and long periods of sitting on the toilet make flares more likely. Prevention isn’t about perfection, it’s about small steps that add up.
Eating more fiber can help make stools softer and bulkier, which lowers the chance of straining. Good options include fruits, vegetables, beans, and whole grains, and some people also use a fiber supplement if food alone is not enough.
Drinking enough water helps fiber work properly and can make stools easier to pass. This is one of the simplest ways to reduce the risk of internal hemorrhoids, especially if you tend to get constipated.
Pushing hard during a bowel movement raises pressure on the veins inside the rectum. Letting yourself go without forcing, and avoiding breath-holding, can help prevent internal hemorrhoids from developing or getting worse.
Ignoring the urge to have a bowel movement can lead to harder, drier stool later on. Going when your body signals the need may lower pressure and is part of how to prevent internal hemorrhoids in everyday life.
Can you prevent Internal hemorrhoid?
You cannot always prevent internal hemorrhoids, but you can lower the chance of them happening or coming back. The most helpful steps are keeping bowel movements soft and regular by eating enough fiber, drinking plenty of water, and staying active, and also avoiding straining or sitting on the toilet for a long time.
Transmission
If you are wondering whether internal hemorrhoids are contagious, the reassuring answer is no. Internal hemorrhoids cannot be passed from one person to another through sex, shared bathrooms, toilet seats, food, or close contact, because they are swollen veins inside the rectum, not an infection.
In other words, internal hemorrhoid is not infectious at all. Instead, it tends to develop when pressure builds up in that area, such as with constipation, straining during bowel movements, pregnancy, or long periods of sitting, and some people may also have a family tendency to develop hemorrhoids more easily.
When to test your genes
For internal hemorrhoids, genetic testing is usually not helpful; they are common and mainly linked to pressure, constipation, pregnancy, and aging rather than a single inherited cause. Consider genetic counseling only if rectal bleeding comes with a strong family history of colorectal cancer, polyposis, or other inherited bowel disease, because the goal is to rule out something more serious, not to diagnose hemorrhoids.
Diagnosis
Internal hemorrhoid is usually diagnosed based on symptoms and a simple exam of the rectum and lower bowel. People with internal hemorrhoid often seek care after painless bright red bleeding with bowel movements, a feeling of tissue slipping out, or mucus and itching. Doctors usually begin with questions about your symptoms and bowel habits, because the diagnosis of internal hemorrhoid can look similar to other causes of rectal bleeding.
Your doctor asks about bleeding, bowel movements, constipation, straining, time spent on the toilet, and any feeling of bulging or prolapse. They also ask about pain, weight loss, abdominal symptoms, and medicines such as blood thinners, because these details can point toward or away from internal hemorrhoid.
The exam often includes looking at the anal area for swelling, skin irritation, prolapse, or other visible problems. A gentle rectal exam may also be done to check for tenderness, lumps, or other causes of bleeding, although internal hemorrhoids may not always be felt this way.
This is a short office exam using a small lighted tube to look just inside the anus and lower rectum. It can directly show enlarged internal hemorrhoids, signs of recent bleeding, and whether tissue is bulging down during straining.
Sigmoidoscopy or colonoscopy may be recommended if bleeding is unexplained, if you are older, or if there are warning signs such as anemia, weight loss, or a change in bowel habits. These tests help rule out polyps, inflammatory bowel disease, colorectal cancer, and other causes that can mimic internal hemorrhoid.
How is Internal hemorrhoid diagnosed?
Internal hemorrhoids are usually diagnosed from your symptoms, especially bright red blood with a bowel movement, plus a doctor’s exam of the anus and the inside of the rectum. To look more closely, the doctor may use a short, lighted tube to see swollen veins inside, and if bleeding is heavy, ongoing, or there are other warning signs, they may order a larger exam of the colon to rule out another cause. Genetic testing is not used to diagnose internal hemorrhoids.
Stages of Internal hemorrhoid
Internal hemorrhoids are usually described by grades rather than by a disease course that steadily worsens over time. These grades tell doctors how far the swollen tissue inside the rectum has moved downward, and they can help explain symptoms such as bleeding, pressure, or tissue coming out during a bowel movement. Doctors usually start with a conversation about bleeding, pain, bowel habits, and the early symptoms of internal hemorrhoids, then confirm the grade with an exam.
Grade 1
The swollen veins stay inside the rectum and do not bulge out through the anus. Many people notice painless bright red bleeding on toilet paper or in the bowl, or they may have no symptoms at all.
Grade 2
The hemorrhoid comes down during a bowel movement or straining but goes back in on its own afterward. For many, this can mean bleeding, a feeling of fullness, or brief prolapse that is more annoying than painful.
Grade 3
The hemorrhoid comes out with straining and does not go back in by itself, so it needs to be gently pushed back in. People with internal hemorrhoids at this stage may have more discomfort, mucus leakage, or trouble keeping the area clean.
Grade 4
The hemorrhoid stays out all the time and cannot be pushed back in. Symptoms can be more severe, and there is a higher chance of swelling, irritation, or trapped tissue that needs prompt medical care.
Outlook and prognosis
The outlook for people with internal hemorrhoids is generally excellent, as many cases improve with increased fiber and fluid intake, better bowel habits, and office-based treatments when needed. Symptoms such as painless rectal bleeding, prolapse, itching, or mucus leakage may come and go over time, and recurrence is common if constipation, straining, or prolonged sitting on the toilet continue. For those wondering about the long term prognosis of internal hemorrhoids, most people can control symptoms well, and severe complications are uncommon. Procedures such as rubber band ligation, sclerotherapy, or surgery are usually effective for persistent or advanced disease, although hemorrhoids can still return. Internal hemorrhoids are not considered life-threatening, and mortality from them is exceedingly rare; death would usually relate only to exceptional circumstances such as major bleeding in a person with serious underlying illness or treatment complications. Ongoing or heavy rectal bleeding should still be evaluated promptly to confirm the cause and rule out other conditions, including colorectal cancer.
Long-term effects
Internal hemorrhoid can be an on-and-off problem rather than a one-time issue. What starts as early symptoms of internal hemorrhoids, such as light bleeding with bowel movements, may keep returning over months or years, especially during flare-ups. It’s important to remember that long-term does not always mean progressive, but some people develop more bothersome changes over time.
Bright red bleeding during or after a bowel movement can keep coming back with internal hemorrhoid. If bleeding is frequent or heavy over time, it may lead to low iron or anemia, which can cause tiredness and weakness.
Internal hemorrhoids can gradually bulge down through the anus, especially with straining. At first they may slip back in on their own, but later they may need to be pushed back or stay out more often.
Many living with internal hemorrhoid notice pressure, fullness, or irritation instead of constant pain. Discomfort often becomes more noticeable when hemorrhoids prolapse, swell, or become trapped outside the anus.
Larger or prolapsing internal hemorrhoids can make it harder to keep the anal area clean and dry. This may lead to mucus leakage, itching, skin irritation, or mild stool staining in underwear.
How is it to live with Internal hemorrhoid?
Living with internal hemorrhoids can be frustrating because the discomfort often stays hidden until it interrupts ordinary moments, whether that means sitting through a meeting, going to the bathroom, or worrying about bleeding you notice on the toilet paper. Many people with internal hemorrhoids have flare-ups that come and go, so daily life can feel unpredictable, but symptoms often improve with changes in bowel habits, diet, hydration, and treatment when needed. For people around you, the effects are usually indirect, such as seeing you avoid certain activities, feel distracted by discomfort, or become anxious about using the bathroom, which can be hard to talk about but is very common.
Treatment and drugs
Internal hemorrhoid treatment depends on how much bleeding, swelling, or discomfort it is causing, and for many people it starts with softer stools and less straining by using more fiber, extra fluids, and sometimes a fiber supplement or stool softener. Medicines that ease symptoms are called topical treatments, and they may include creams, ointments, or suppositories to reduce irritation, along with short-term pain relief if needed. If internal hemorrhoid symptoms keep coming back or there is ongoing bleeding, doctors may use office treatments such as rubber band ligation, injection treatment, or heat-based therapy to shrink the hemorrhoid. Not every treatment works the same way for every person, and people with more severe internal hemorrhoid disease may need surgery to remove or fix the swollen tissue.
Can you cure Internal hemorrhoid?
Internal hemorrhoids can often be treated very effectively, and some go away with home care, but there is not always a permanent cure because they can come back. Treatment can ease pain, bleeding, and itching, and may shrink or remove the swollen veins using diet changes, more fluids, stool-softening medicine, creams, or simple office or surgery treatments when needed.
Non-drug treatment
Internal hemorrhoid symptoms can make everyday things uncomfortable, from sitting through a meeting to dreading a bowel movement. Non-drug care focuses on easing pressure in the rectal area, keeping stools soft, and reducing straining so the swollen veins have a chance to settle. For many, treatment begins not at the pharmacy, but with simple changes in bathroom habits, food, fluids, and soothing self-care. These steps are often the first answer when people ask how to treat internal hemorrhoids without surgery.
Eating more fiber can make stools softer and easier to pass, which lowers straining during bowel movements. Many living with internal hemorrhoid symptoms do best with fiber from fruits, vegetables, beans, and whole grains, added gradually to avoid gas and bloating.
Drinking enough water helps fiber work properly and can prevent hard, dry stools. For many, this means aiming for steady fluids through the day rather than trying to catch up all at once.
Going when you feel the urge can help avoid constipation and the extra pushing that can worsen internal hemorrhoid swelling. It also helps to avoid sitting on the toilet for long periods, including scrolling on your phone.
Sitting in warm water for 10 to 15 minutes can soothe irritation and help the area feel less tense after a bowel movement. Some may find this especially helpful during a flare, even if it does not make the hemorrhoid go away.
Your genes may have an impact on how drugs work for you
For most people with internal hemorrhoids, genes are not known to play a big role in how well the usual treatments work, such as creams, suppositories, stool softeners, or pain relievers. In day-to-day care, results are much more often shaped by things like how swollen the hemorrhoids are, whether there is ongoing constipation or straining, and other health issues. If a procedure is needed, some medicines used for pain control can work a little differently from one person to another, but gene-based testing is not a routine part of treating internal hemorrhoids.
Pharmacological treatments
Treatment for internal hemorrhoid often focuses on easing bleeding, itching, swelling, and the strain that keeps symptoms going. Many people with internal hemorrhoid do well with medicines that soften stool, calm irritation, or briefly reduce inflammation, especially when early symptoms of internal hemorrhoid are mild. Some products are sold over the counter, while others may be prescribed if symptoms are more troublesome. Not everyone responds to the same medication in the same way.
Docusate and medicines that draw water into the bowel, such as polyethylene glycol, can make stools easier to pass. This may lower straining and reduce irritation of internal hemorrhoid during bowel movements.
Psyllium, methylcellulose, and wheat dextrin are often used to bulk and soften stool over time. For many, this can mean less pushing, less bleeding, and fewer flare-ups.
Hydrocortisone suppositories, creams, or foams may be used for a short time to reduce itching and swelling. They can help during a flare, but longer use may irritate or thin the skin around the anus.
Lidocaine and pramoxine can temporarily ease burning, soreness, or itching. Some medicines work quickly, while others are mainly for brief symptom relief rather than long-term control.
Genetic influences
Internal hemorrhoids can seem more common in some families, which suggests that inherited traits may affect risk. It’s natural to ask whether family history plays a role. Some people may inherit weaker supportive tissue or vein walls in the rectal area, making internal hemorrhoids more likely over time, especially when this combines with constipation, straining, pregnancy, aging, or long periods of sitting. Genetics may also shape related tendencies, such as chronic constipation or differences in pelvic floor support, which can indirectly raise the chance of an internal hemorrhoid. Still, having a family history of internal hemorrhoids does not mean you will definitely develop them, and daily habits and other health factors often matter just as much or more.
Is Internal hemorrhoid genetic?
Genetics may slightly affect the risk of internal hemorrhoid by influencing vein strength, connective tissue, and bowel habits such as constipation. Still, lifestyle and strain-related factors usually matter more than inherited genetic variations.
Having a genetic risk is not necessarily a diagnosis
Gene variants are a normal part of human biology and are common in the wider population. Most do not directly affect health and simply reflect natural human diversity. For many genes, having a variant associated with a condition points to a possible link rather than a definite diagnosis, especially when more than one gene and environmental factors are involved. In some cases, though, a single well-understood variant in a specific gene is enough to confirm a diagnosis.
Pharmacogenetics—how genetics influence drug effects
With internal hemorrhoids, the main reason treatment differs from one person to another is usually the severity of bleeding, swelling, or tissue that slips outward, rather than genetics alone. Even so, inherited differences can affect how quickly your liver handles some pain medicines, so one person may get relief while another feels little benefit or more side effects. Not every difference in response is genetic, but constipation, straining, pregnancy, other health conditions, and medicines you already take often have a bigger effect on what works best.
For most people living with internal hemorrhoids, genetic testing is not a routine part of care because fiber, stool softeners, creams or suppositories, and office procedures are usually chosen based on symptoms and the exam. Genetics may matter more after a procedure if stronger pain medicine is needed, since some people break down certain drugs faster or slower than expected. If internal hemorrhoid treatment is not working as expected, it is usually more useful to review bowel habits, bleeding, pain, and other medications with your doctor than to look for a genetic cause first.
Interactions with other conditions
Bleeding, pressure, or a feeling of incomplete emptying from internal hemorrhoid can sometimes be confused with other bowel problems, especially anal fissures, irritable bowel symptoms, or constipation. Many people live with more than one health issue at a time. Chronic constipation is one of the most important links, because repeated straining and hard stools can worsen internal hemorrhoid and also make pelvic floor problems or rectal prolapse more noticeable. Pregnancy can have a similar effect, since pressure in the pelvis and constipation often happen together and may lead to hemorrhoid symptoms alongside varicose veins or pelvic discomfort. Internal hemorrhoid may also be harder to sort out in people with inflammatory bowel disease or colorectal cancer, because rectal bleeding can happen in those conditions too, so symptoms should not automatically be blamed on hemorrhoids. Some medicines matter as well: blood thinners can make hemorrhoid bleeding seem heavier, and iron supplements or opioid pain medicines can worsen constipation, which may trigger flare-ups.
How genes can cause diseases
Humans have more than 20,000 genes, each carrying out one or a few specific functions in the body. One gene instructs the body to digest lactose from milk, another tells the body how to build strong bones and another prevents the body's cells from beginning to multiply uncontrollably and developing into cancer. As all of these genes combined are the building instructions for our body, a defect in one of these genes can have severe health consequences.
Through decades of genetic research, we know the genetic code of any healthy/functional human gene. We have also identified that in certain positions on a gene, some individuals may have a different genetic letter from the one you have. We call these hotspots "Genetic Variations" or "Variants" in short. In many cases, studies have been able to show that having the genetic letter "G" in the position makes you healthy, but having the letter "A" in the same position disrupts the gene function and causes a disease. Genopedia allows you to view these variants in genes and summarizes all that we know from scientific research, which genetic letters (Genotype) have good or bad consequences on your health or on your traits.
What other conditions can cause similar symptoms to Internal hemorrhoid?
Other problems can look a lot like internal hemorrhoids, especially a small tear near the anus, an outside hemorrhoid, or tissue from inside the back passage slipping outward. Bleeding can also come from bowel inflammation, growths called polyps, or colon and rectal cancer, so bleeding that keeps happening, pain, weight loss, or a change in bowel habits should be checked by a doctor.
History
People have likely dealt with the discomfort of internal hemorrhoids for as long as humans have been sitting, straining, lifting, and going through pregnancy. Long before modern clinics, healers wrote about bleeding with bowel movements, a feeling of pressure in the rectum, and tissue that could slip down during or after using the bathroom. These symptoms were often grouped with other anal and rectal problems, so early descriptions were not always precise.
Across cultures and time periods, doctors tried many ways to understand and treat internal hemorrhoids. Ancient Egyptian, Greek, Roman, Indian, Arabic, and later European medical texts all described symptoms that fit what we now recognize as hemorrhoids, including internal hemorrhoids. Treatments ranged from diet changes and warm baths to herbal preparations, banding methods, and surgery, although these approaches were often uncomfortable and not always safe by today’s standards.
As medical science evolved, doctors became better at separating internal hemorrhoids from other causes of rectal bleeding, such as fissures, infections, inflammatory bowel disease, and cancer. That mattered because the same everyday problem, like seeing bright red blood on toilet paper, can have very different causes. Over the 19th and 20th centuries, better anatomy studies and improved examination tools helped explain that internal hemorrhoids involve swollen vascular tissue inside the rectum rather than simply “varicose veins,” which was a common older idea.
In recent decades, awareness has grown that internal hemorrhoids are common and often manageable, not something people need to hide out of embarrassment. Research has also clarified why symptoms vary: some people mainly notice painless bleeding, while others have prolapse, mucus leakage, itching, or a sense of incomplete emptying. Modern care has shifted toward matching treatment to symptom severity, starting with fiber, fluids, and bathroom habit changes, then using office procedures or surgery when needed.
Knowing this history helps explain why current advice for internal hemorrhoids focuses not just on removing swollen tissue, but on reducing strain and protecting long-term bowel health. It also highlights an important point for anyone worried about early symptoms of internal hemorrhoids: even though hemorrhoids are common, ongoing bleeding or new rectal symptoms should still be checked by a clinician so the right cause is identified.