What are hemorrhoids?

Hemorrhoids are a normal part of the anal canal. When veins inside the hemorrhoids swell or burst, hemorrhoid problems happen. Although uncomfortable at times, this common condition rarely poses a serious problem.

Normally, tissue surrounding the inside of the anus, sometimes called "anal cushions," fills with blood to help control bowel movements. Hemorrhoid problems happen when excessive pressure or other factors cause the veins within these cushions to swell and stretch.

Many people have hemorrhoid problems at some time. They can happen at any age, but the incidence increases after age 30. About half of people older than 50 have had hemorrhoid problems at some time in their life.¹

What causes hemorrhoid problems?

Excessive pressure on the veins in the pelvic and rectal area causes hemorrhoid problems. As pressure increases, blood pools in veins and causes them to swell, stretching the surrounding tissue. Increased pressure can come from rushing to complete a bowel movement or from constipation or persistent diarrhea, if either causes too much straining during bowel movements.

Being overweight also can contribute to hemorrhoid problems.

Pregnant women frequently develop hemorrhoids during the last 6 months of pregnancy because of increased pressure on the blood vessels in the pelvic area. Straining to push the baby out during labor can make hemorrhoid problems worse.

What are the types of hemorrhoids?

Hemorrhoids  can develop inside the anal canal (internal hemorrhoids) or near the anal opening (external hemorrhoids). Both types can occur at the same time. The symptoms, progression, and treatment differ depending on where the hemorrhoids are.

Internal hemorrhoids have four degrees of severity. Bleeding may occur with any of these.

• First degree: The hemorrhoid does not stick out from the anus.
• Second degree: The hemorrhoid sticks out from the anus during a bowel movement but returns on its own to the anal canal afterward.
• Third degree: The hemorrhoid sticks out from the anus during a bowel movement and does not return to the anal canal on its own. In this case, you can push it inside the anus with your finger and then it will stay in.
• Fourth degree: The hemorrhoid is always outside the anus and cannot be pushed into the anal canal.

What are the symptoms?

• External hemorrhoids. External hemorrhoids can cause pain, itching, burning, and irritation. You might notice streaks of bright red blood on toilet paper after straining to have a bowel movement, and it may be difficult to clean the anal area.
• Internal hemorrhoids. Rectal bleeding is the most common symptom of internal hemorrhoids. You may notice bright red streaks of blood on toilet paper or bright red blood in the toilet bowl after having a normal bowel movement. You may see blood on the surface of the stool. Internal hemorrhoids can range from small, swollen veins in the wall of the anal canal to large, sagging veins and tissue that bulge out of the anus all the time. Internal hemorrhoids can be painful if they protrude all the time and are squeezed by the anal muscles or if they are clotted (thrombosed). You also may see mucus on the stool or toilet tissue, from hemorrhoids that stick out.

How are hemorrhoids diagnosed?

The diagnosis of hemorrhoids is based on a medical history and physical exam, which help a health professional identify the type of hemorrhoid-external or internal-and determine the appropriate treatment.

If you have rectal bleeding, it can be a sign of something more serious than hemorrhoids, like colon, rectal, or anal cancer. But you may not need many tests at first, especially if you are under 50 and your doctor thinks that hemorrhoids are the cause of rectal bleeding. Your doctor may only examine your rectum with a gloved finger (digital rectal exam). Or your doctor may use a short, lighted scope to look at the rectum (anoscopy).

If anoscopy does not provide a clear diagnosis, your health professional may use a flexible sigmoidoscope to look at the lower third of the colon or a colonoscope to examine the entire colon to check for other possible causes of bleeding.

How are hemorrhoids treated?

Home treatment is recommended for most external hemorrhoids. Treatment includes gradually increasing fiber and water in your diet, using creams to help stop itching, and occasional use of stool softeners.

Most internal hemorrhoids can be treated at home with the same measures used for external hemorrhoids. Generally, more severe hemorrhoids can be treated with nonsurgical procedures such as tying off hemorrhoids with rubber bands (rubber band ligation), scarring the tissue around them (coagulation therapy), injecting them with chemicals (injection sclerotherapy), or surgical removal (hemorrhoidectomy).

You can often prevent hemorrhoids or keep them from becoming worse by maintaining a healthy lifestyle. Eat a fiber-rich diet of fruits, vegetables, and whole grains. Also, drink plenty of water and exercise regularly.

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