Hemorrhoids: A Complete Guide to Causes, Symptoms, Types, Diagnosis & Treatment

Hemorrhoids are a common condition that can cause itching, discomfort, swelling, pain, or bleeding around the anus and lower rectum. Also commonly called piles, hemorrhoids develop when the veins and supporting tissues in this area become swollen or irritated.

Although hemorrhoids are often manageable with dietary and lifestyle changes, persistent symptoms should not simply be ignored. Rectal bleeding, in particular, can have causes other than hemorrhoids and may require medical evaluation.

This complete guide explains what hemorrhoids are, what causes hemorrhoids, the different types of hemorrhoids, common hemorrhoid symptoms, how hemorrhoids are diagnosed, available hemorrhoid treatment options, home care, prevention, and when to see a doctor.

Medical disclaimer: This article is intended for general educational purposes and does not replace an examination or diagnosis from a qualified healthcare professional. Rectal bleeding or severe anal pain should be medically evaluated, particularly when symptoms are persistent, significant, or accompanied by other concerning symptoms.

What Are Hemorrhoids?

Hemorrhoids are swollen and inflamed veins and supporting tissues around the anus or in the lower rectum. They are similar in some ways to varicose veins and can occur either inside the rectum or beneath the skin around the anus.

Hemorrhoids are generally classified into two main categories:

•  Internal hemorrhoids – develop inside the anus or lower rectum.

•  External hemorrhoids – develop under the skin around the anus.

An internal hemorrhoid may cause painless rectal bleeding or protrude through the anal opening. External hemorrhoids can cause itching, swelling, discomfort, and pain. A blood clot can also form inside an external hemorrhoid, resulting in a thrombosed hemorrhoid, which can be particularly painful.

Hemorrhoids are common, but symptoms can vary considerably from person to person. Some people may have hemorrhoids without noticeable symptoms, while others may experience bleeding, itching, swelling, or significant discomfort.

What Causes Hemorrhoids?

Hemorrhoids generally develop when increased pressure is placed on the veins and tissues in the lower rectum and anus.

One of the most common contributing factors is straining during bowel movements. Repeated straining can increase pressure on the blood vessels in the anorectal area and contribute to swelling.

Other possible causes and contributing factors include:

•  Chronic constipation

•  Long-lasting diarrhea

•  Straining during bowel movements

•  Sitting on the toilet for prolonged periods

•  A low-fiber diet

•  Pregnancy

•  Obesity

•  Regular heavy lifting

•  Increasing age

•  Increased pressure in the pelvic and anal region

Mayo Clinic also identifies pregnancy, prolonged sitting, dietary factors, constipation, diarrhea, and regular heavy lifting among factors associated with hemorrhoids.

Why Does Constipation Cause Hemorrhoids?

Constipation can make stools harder and more difficult to pass. A person may then strain or spend a long time attempting to have a bowel movement.

Repeated straining can increase pressure in the veins around the anus and lower rectum, contributing to hemorrhoid formation or worsening existing symptoms.

This is one reason why maintaining softer, easier-to-pass stools is an important part of both hemorrhoid treatment and hemorrhoid prevention.

Common Risk Factors for Hemorrhoids

Some people are more likely to develop hemorrhoids because of their bowel habits, lifestyle, age, or other circumstances.

Not everyone with these risk factors will develop hemorrhoids, and hemorrhoids can also occur without an obvious single cause.

Types of Hemorrhoids

Understanding the types of hemorrhoids can help explain why symptoms differ between patients.

The main types include:

1. Internal Hemorrhoids

Internal hemorrhoids develop inside the rectum. They are often not visible from outside and may not cause pain because the area where they develop has different pain sensitivity than the skin around the anus.

A common symptom of internal hemorrhoids is painless bright-red rectal bleeding, particularly during or after a bowel movement.

Internal hemorrhoids can also become prolapsed, meaning they extend through the anal opening.

2. External Hemorrhoids

External hemorrhoids develop beneath the skin around the anus.

They may cause:

•  Anal itching

•  Pain or discomfort

•  Swelling

•  Irritation

•  Bleeding

•  A noticeable lump around the anus

Because external hemorrhoids occur beneath sensitive skin, they can be more painful than uncomplicated internal hemorrhoids.

3. Thrombosed Hemorrhoids

A thrombosed hemorrhoid occurs when a blood clot forms within an external hemorrhoid.

It may appear as a firm or discolored lump near the anus and can cause:

•  Sudden or severe pain

•  Swelling

•  Inflammation

•  A hard lump

A thrombosed external hemorrhoid can sometimes require medical treatment, especially when pain is significant.

Internal vs. External Hemorrhoids

The following table summarizes the major differences between internal and external hemorrhoids.

The exact symptoms and treatment depend on the individual condition, severity, and whether another anorectal condition is present.

Hemorrhoids Symptoms

The symptoms of hemorrhoids vary depending on whether the hemorrhoid is internal, external, prolapsed, or thrombosed.

Common hemorrhoid symptoms include:

•  Bright-red blood during or after a bowel movement

•  Anal itching

•  Irritation around the anus

•  Pain or discomfort

•  Swelling

•  A lump near the anus

•  A hemorrhoid protruding from the anus

•  Difficulty with comfort while sitting

•  Mucus or irritation in some cases

Internal hemorrhoids commonly cause painless bleeding, while external hemorrhoids are more likely to produce pain, itching, swelling, or discomfort.

Is Rectal Bleeding Always Caused by Hemorrhoids?

No.

Although hemorrhoids are a possible cause of rectal bleeding, bleeding can also occur with conditions such as anal fissures, inflammatory bowel disease, polyps, and colorectal cancer.

Therefore, it is important not to automatically assume that every episode of rectal bleeding is caused by hemorrhoids.

Persistent, unexplained, recurrent, or significant bleeding deserves medical evaluation.

What Do Hemorrhoids Look and Feel Like?

The appearance and sensation of hemorrhoids depend on the type.

An external hemorrhoid may feel like a small lump or swelling near the anus. If it becomes thrombosed, the lump may become firm and painful and may have a darker or discolored appearance.

An internal hemorrhoid may not be visible or noticeable unless it prolapses through the anal opening.

Because several anorectal conditions can cause similar symptoms, visual appearance alone should not be used to make a diagnosis.

Grades of Internal Hemorrhoids

Healthcare professionals may classify internal hemorrhoids according to the degree of prolapse.

This classification helps clinicians determine the most appropriate treatment approach.

However, treatment decisions are not based on grade alone. Symptoms, bleeding, bowel habits, examination findings, previous treatment, and overall health can all influence management.

How Are Hemorrhoids Diagnosed?

A hemorrhoid diagnosis usually begins with a medical history and physical examination.

A healthcare professional may ask about:

•  Your symptoms

•  How long symptoms have been present

•  Bowel habits

•  Constipation or diarrhea

•  Straining during bowel movements

•  Diet and fiber intake

•  Previous episodes of hemorrhoids

•  Rectal bleeding

•  Current medications and medical conditions

A physical examination may involve inspection of the area around the anus.

For suspected internal hemorrhoids, a clinician may perform a digital rectal examination and may use an instrument such as an anoscope to examine the anal canal and lower rectum.

When Is a Colonoscopy Needed?

A colonoscopy is not automatically required for every person with hemorrhoids.

However, a healthcare professional may recommend evaluation of the entire colon when symptoms or risk factors suggest another digestive condition, or when colorectal cancer screening is appropriate.

This is important because rectal bleeding should not automatically be attributed to hemorrhoids.

Hemorrhoids Treatment Options

The appropriate hemorrhoid treatment depends on the type and severity of symptoms.

Treatment can range from dietary and lifestyle changes to office-based procedures or surgery.

Common treatment approaches include:

•  Increasing dietary fiber

•  Drinking adequate fluids

•  Avoiding straining

•  Improving toilet habits

•  Short-term topical medications

•  Warm sitz baths

•  Fiber supplements or stool-softening approaches

•  Rubber band ligation

•  Sclerotherapy

•  Infrared or other coagulation techniques

•  Surgery for selected severe or recurrent cases

NIDDK and Mayo Clinic both describe dietary changes, fiber, appropriate fluids, avoidance of straining, and selected medications as common initial approaches for symptomatic hemorrhoids.

Home Treatment for Hemorrhoids

Many mild hemorrhoid symptoms can improve with conservative care.

1. Increase Fiber Intake

Fiber can help make stool softer and easier to pass, reducing the need for straining.

Good dietary sources include:

•  Fruits

•  Vegetables

•  Whole grains

•  Legumes

•  Other naturally fiber-rich foods

Increase fiber gradually if your current intake is low because a sudden increase can cause bloating or gas.

Fiber supplements such as psyllium or methylcellulose may also be considered when appropriate.

2. Drink Adequate Fluids

Adequate fluid intake can help support softer stools, particularly when increasing dietary fiber.

Your individual fluid requirements may vary depending on your health, medications, activity level, and other factors.

3. Avoid Straining

Try not to force a bowel movement.

Repeated straining increases pressure around the lower rectum and may aggravate hemorrhoids.

4. Avoid Sitting on the Toilet for Long Periods

Spending extended periods sitting on the toilet can increase pressure around the anal area.

Go when you need to have a bowel movement, but avoid prolonged sitting or straining.

5. Try a Warm Sitz Bath

A warm sitz bath may help relieve discomfort and irritation.

Mayo Clinic recommends soaking the anal area in plain warm water for around 10–15 minutes several times a day for symptom relief.

6. Consider Short-Term Topical Treatments

Over-the-counter hemorrhoid creams, ointments, suppositories, or pads may temporarily relieve symptoms such as itching, swelling, and discomfort.

Some products contain ingredients such as hydrocortisone, witch hazel, or local anesthetics.

However, these products should be used according to their instructions. Prolonged use of some products, particularly topical steroids, can cause side effects.

Medical Procedures for Hemorrhoids

When lifestyle changes and home treatment do not adequately control symptoms, a healthcare professional may recommend an office-based procedure.

•  Rubber Band Ligation

Rubber band ligation is commonly used for selected internal hemorrhoids.

During the procedure, a small rubber band is placed around the base of the hemorrhoid. This cuts off its blood supply, causing the treated tissue to shrink and eventually fall away.

Rubber band ligation should only be performed by an appropriately trained healthcare professional.

•  Sclerotherapy

During sclerotherapy, a healthcare professional injects a solution into the hemorrhoid tissue. The treatment causes changes in the tissue that reduce its blood supply and help shrink the hemorrhoid.

•  Infrared Photocoagulation

Infrared photocoagulation uses infrared energy to create controlled tissue changes that reduce blood flow to the hemorrhoid and encourage it to shrink.

•  Electrocoagulation

Electrocoagulation uses an electrical current to produce tissue changes that reduce blood flow to an internal hemorrhoid.

The choice of procedure depends on factors such as hemorrhoid type, symptoms, prolapse, previous treatment, and clinical findings.

Hemorrhoid Surgery

Most people with hemorrhoids do not automatically need surgery.

However, surgery may be considered for certain people with large, severe, prolapsing, recurrent, or treatment-resistant hemorrhoids.

•  Hemorrhoidectomy

A hemorrhoidectomy involves surgically removing hemorrhoidal tissue.

It may be considered when hemorrhoids are severe or when other treatments have not provided adequate relief.

Mayo Clinic describes hemorrhoidectomy as a highly effective treatment for severe or recurring hemorrhoids, although recovery can involve postoperative pain and other potential complications.

•  Hemorrhoid Stapling

Stapled hemorrhoidopexy is another surgical technique generally used for selected internal hemorrhoids.

It can involve less postoperative pain than traditional hemorrhoidectomy, but recurrence and other risks must be considered when selecting the appropriate procedure.

A colorectal surgeon or other qualified healthcare professional can discuss the benefits and risks of each approach based on the individual's condition.

Hemorrhoids During Pregnancy

Pregnancy can increase the likelihood of developing hemorrhoids because the growing uterus and changes associated with pregnancy can increase pressure in the pelvic region.

Constipation during pregnancy may also contribute by increasing straining during bowel movements.

Pregnant patients with hemorrhoid symptoms should discuss treatment options with their healthcare professional before using medications or topical products.

Dietary fiber, appropriate fluid intake, physical activity when medically appropriate, and avoiding unnecessary straining may help reduce constipation-related pressure.

How to Prevent Hemorrhoids?

Preventing hemorrhoids largely involves reducing constipation and avoiding unnecessary pressure on the veins and tissues around the anus.

Practical prevention strategies include:

When Should You See a Doctor for Hemorrhoids?

Mild hemorrhoid symptoms may improve with home care, but medical evaluation is appropriate in several situations.

Consider seeing a healthcare professional if:

•  Rectal bleeding continues or returns

•  Symptoms do not improve after about a week of home care

•  Pain is significant or worsening

•  A painful lump develops around the anus

•  Hemorrhoids repeatedly return

•  A hemorrhoid remains prolapsed

•  You are unsure whether your symptoms are caused by hemorrhoids

•  You have changes in bowel habits

•  You have other concerning digestive symptoms

When Is Rectal Bleeding an Emergency?

Large amounts of rectal bleeding, dizziness, fainting, or lightheadedness require urgent medical attention.

NIDDK also advises seeking care promptly when severe anal pain and rectal bleeding occur, particularly when accompanied by abdominal discomfort, diarrhea, or fever.

Hemorrhoids vs. Other Causes of Rectal Bleeding

One of the most important things to understand is that rectal bleeding does not always mean hemorrhoids.

Possible causes can include:

NIDDK notes that lower gastrointestinal bleeding can have multiple causes, including hemorrhoids, anal fissures, polyps, inflammatory bowel disease, and colorectal cancer.

Therefore, persistent or unexplained rectal bleeding should be assessed rather than automatically assumed to be hemorrhoids.

Frequently Asked Questions (FAQ's):

Q.  What are hemorrhoids?

Hemorrhoids are swollen and inflamed veins and supporting tissues around the anus or in the lower rectum. They are commonly classified as internal or external hemorrhoids.

Q.  What are the most common hemorrhoid symptoms?

Common hemorrhoid symptoms include rectal bleeding, itching, irritation, swelling, pain, discomfort, and a lump around the anus. Internal hemorrhoids commonly cause painless bleeding, while external hemorrhoids can cause pain and swelling.

Q.  What causes hemorrhoids?

Hemorrhoids can be associated with increased pressure around the lower rectum, particularly from straining, constipation, prolonged toilet sitting, pregnancy, low dietary fiber, diarrhea, aging, obesity, and heavy lifting.

Q.  Are internal hemorrhoids painful?

Internal hemorrhoids are often painless, especially when they remain inside the rectum. They may cause painless bright-red bleeding. Pain can occur when an internal hemorrhoid prolapses or develops complications.

Q.  Are external hemorrhoids painful?

External hemorrhoids can cause pain, itching, swelling, and irritation. A thrombosed external hemorrhoid can cause particularly significant pain because of a blood clot within the hemorrhoid.

Q.  How can I treat hemorrhoids at home?

Common conservative approaches include increasing dietary fiber, drinking adequate fluids, avoiding straining, avoiding prolonged toilet sitting, taking warm sitz baths, and using appropriate short-term over-the-counter products when suitable.

Q.  How long do hemorrhoids take to go away?

Mild hemorrhoid symptoms can improve with conservative treatment. Mayo Clinic notes that symptoms often improve within about a week with home treatment. If symptoms do not improve or become worse, medical evaluation is recommended.

Q.  What is a thrombosed hemorrhoid?

A thrombosed hemorrhoid occurs when a blood clot forms inside an external hemorrhoid. It can cause a hard, swollen, discolored lump and significant pain.

Q.  Can hemorrhoids cause rectal bleeding?

Yes. Hemorrhoids can cause rectal bleeding, particularly internal hemorrhoids. However, rectal bleeding can have many other causes, so persistent or unexplained bleeding should be evaluated by a healthcare professional.

Q.  Can hemorrhoids be prevented?

The risk of hemorrhoids may be reduced by keeping stools soft, eating enough fiber, drinking adequate fluids, avoiding straining, staying active, and avoiding prolonged sitting on the toilet.

1Q.  When should I see a doctor for hemorrhoids?

You should consider medical evaluation if symptoms persist, recur, become severe, or involve significant bleeding or pain. You should also seek evaluation if you are unsure whether hemorrhoids are responsible for your symptoms.

Q.  Do all hemorrhoids require surgery?

No. Many hemorrhoids can be managed with dietary changes, improved bowel habits, medications, or office-based procedures. Surgery is generally reserved for selected patients with severe, large, prolapsing, recurrent, or treatment-resistant hemorrhoids.

Q.  Can hemorrhoids come back after treatment?

Yes. Treatment can address existing hemorrhoids and symptoms, but factors such as constipation, straining, and bowel habits can contribute to recurrence. Maintaining healthy bowel habits can help reduce the risk.

1Q.  Are hemorrhoids the same as piles?

Yes. Piles is another commonly used term for hemorrhoids.

Q.  Can rectal bleeding be something other than hemorrhoids?

Yes. Rectal bleeding may have several causes, including anal fissures, inflammatory bowel disease, polyps, and colorectal cancer. This is why persistent or unexplained bleeding should not automatically be attributed to hemorrhoids.

Final Takeaway: Understanding Hemorrhoids

Hemorrhoids are common and can range from mild irritation to painful or recurrent symptoms. Understanding the causes, symptoms, types, diagnosis, and treatment of hemorrhoids can help you recognize when conservative care may be appropriate and when professional evaluation is needed.

The first steps for many people involve improving bowel habits, increasing fiber, drinking adequate fluids, avoiding straining, and limiting prolonged toilet sitting. More persistent or severe hemorrhoids may require office-based procedures or, in selected cases, surgery.

Most importantly, do not automatically assume that rectal bleeding is caused by hemorrhoids. If bleeding is persistent, significant, recurrent, or accompanied by other concerning symptoms, seek medical evaluation to determine the underlying cause.

If hemorrhoid symptoms are interfering with daily activities, recurring frequently, or not improving with conservative care, a qualified healthcare professional can assess the condition and discuss appropriate treatment options.