Anal Skin Tag Causes, Diagnosis, and Treatment

Skin tags are raised areas or bumps on the outer surface of the skin. Anal skin tags are common and while they might be sensitive, itchy, cause some discomfort, and make keeping clean more challenging, they are not usually painful.

A doctor talking to his patient in hospital room
Thomas Barwick / Getty Images

It can be distressing to find a lump or a bump in the perianal area or to have symptoms such as itching. But skin tags are benign (not cancerous) and typically small (sometimes only a few millimeters).

It’s important to get anything new in the anal area looked at by a physician to be sure that it is a skin tag, even if an anal skin tag has been diagnosed in the past.

anal skin tags causes
Illustration by Cindy Chung, Verywell


Skin tags may be caused by blood vessels in the anal area swelling under the skin and then reducing again. When the swelling reduces, the skin may not reduce back down again to what it was before. The loose skin that results may become a skin tag.

Swollen blood vessels in the anus may be caused by blood clots, diarrhea, exercise, hemorrhoids, lifting heavy objects, pregnancy, and straining on the toilet bowl. Other causes include:

  • Constipation: Constipation is having bowel movements that are hard and difficult to pass. Straining to pass a bowel movement can put pressure on blood vessels in the anal area, causing them to swell.
  • Diarrhea: Diarrhea is considered three or more loose or watery stools a day. Frequent wiping, as well as the acidity of loose stools, can irritate the skin around the anus.
  • Hemorrhoids: People who have had hemorrhoids (which are veins in the anus or rectum that become inflamed) in the past may be at increased risk of developing skin tags. Hemorrhoids are quite common, especially in pregnant women and older people.
  • Crohn’s disease: People who have Crohn’s disease that affects the anal area are more prone to developing skin tags. One study published in 2008 showed that anal skin tags are more frequently associated with Crohn’s disease than ulcerative colitis (another form of inflammatory bowel disease) and that in some cases, anal skin tags may be a precursor to the diagnosis of Crohn’s.
  • Pregnancy: Pregnant women are more prone to skin tags because of hormonal changes. In addition, hemorrhoids are common during pregnancy, and these factors can lead to developing skin tags.


Finding a lump or a bulge in the anal area should prompt a call to a doctor. There may not be any other symptoms from an anal skin tag and a nonspecific lump could be a sign of a different condition.

Some of the potential problems in the anal area can be serious, so it’s better to know for sure if the bump is actually an anal skin tag. A primary care doctor can often make the diagnosis or he/she will make a referral to a specialist (a gastroenterologist or a colorectal surgeon) if there is a need.

A doctor will need to look at the anal area in order to make a diagnosis. Patients will be asked to remove their pants and underwear and put on a hospital gown or cover up with a paper drape.

Next is lying on an exam table, usually on the left side, or standing up and leaning over the exam table. While wearing gloves, the doctor will look at the anal area and perform a diagnostic exam.

Rectal Exam

It might be necessary to do a rectal exam. This means that the doctor will lubricate one finger and insert it into the rectum. This is to feel if there are any abnormal structures inside the anus and also to see if the gloved finger comes away with any fluids on it (such as pus or blood).

Undergoing a visual exam of the rectal area may be uncomfortable but it will be over as quickly as possible. It helps to remember that physicians are trained in giving exams and it’s not unusual for them.


An anoscopy is a test where the doctor (usually a gastroenterologist or a colorectal surgeon) uses an instrument with a light on the end to look inside the anal canal. It can be done right in a doctor’s office, usually with no preparation.

The tool is lubricated and inserted a few centimeters into the anus. In some cases, it might be necessary to have an enema to clean out the rectum and to get a better look. If a tissue sample is needed (a biopsy), it can be taken at this time. There may be some discomfort when the anoscope is inserted and if a biopsy is taken, but it will be over quickly. 


A sigmoidoscopy is a test done to look at the rectum and the last part of the colon, which is called the sigmoid colon. It may not be needed for simple skin tags, but if there’s a suspicion that there is another cause for a lump in the anal area, it might be used.

This test is usually done by a gastroenterologist or a colorectal surgeon and might be done in the office without any preparation. However, in some cases, there might be a need to clear the colon of stool with laxatives and/or an enema.

The instrument used is called a sigmoidoscope, and it is inserted through the rectum and manipulated up into the large intestine. A physician can get a good look inside the last section of the colon and can also take biopsies if needed. This test might take a few minutes and may be uncomfortable if no sedation is given.


After a skin tag is diagnosed, it needs to be decided if it should be removed or left alone. For small skin tags or ones that aren’t causing any symptoms or discomfort, it might not be worth removing them or removing them right away.

In some cases, a physician might recommend that a skin tag be removed. Skin tags are on the outside of the body so removal won’t require any invasive procedures. 

Numbing agents will be used before removing a skin tag surgically. A numbing medication will be used in the area of the tag to reduce pain while it’s being removed.

In some cases, a sedative could be recommended in order to help patients be more comfortable during the procedure. There are several ways in which a skin tag might be removed.


For smaller tags, it’s possible to remove them in some cases with surgical scissors. If small enough, the area might heal on its own. Larger tags that are removed surgically might leave a larger wound, and so stitches or staples could be necessary.

After surgical removal, the area needs to be kept clean until it heals. Because this is an area that comes into contact with stool, which increases the risk of infection, this method might not be preferred by physicians for larger tags. 


Cryotherapy is the process of using liquid nitrogen to freeze off the skin tag. The area will be numbed and liquid nitrogen is applied to the tag. The tag will fall off over the next few days.


Small skin tags may respond well to this treatment where an electrical current is applied to the skin and dries it out.


A type of laser might be used to kill the skin of the skin tag. The area will be numbed before using the laser to treat the tags.

Instructions After Skin Tag Removal

After a procedure to remove a skin tag, most people will be able to go home and rest the remainder of the day, returning to light/normal activities the next day. It may be recommended to avoid strenuous activities for a certain period of time while the area heals, possibly for several days.

Other instructions may be given for keeping the area clean after a bowel movement. It might be necessary to use wipes to remove any bacteria from the area or to clean thoroughly with soap and water. 

Stool softeners might also be prescribed after anal skin tag removal so that bowel movements are soft and easy to pass without straining. Sitting in a bathtub of a few inches of water or using a sitz bath on the toilet may also be recommended to promote healing.


In many cases, it may not be possible to prevent anal skin tags. However, if it’s known that one is prone to getting them, there are some things that may help in preventing them from forming in the future.

Tips for Avoiding Anal Skin Tags

  • Avoid tight clothing that can irritate the area
  • Keep bowel movements regular through eating enough fiber, drinking water, and exercising
  • See a doctor regularly for any digestive conditions, such as Crohn’s disease
  • Maintain a healthy weight

However, you should consult your physician for specific instructions that may depend on what's suspected of causing your skin tags in the first place.

A Word From Verywell

Skin tags are annoying and can cause discomfort, but they’re not usually a cause for concern and won’t progress into a more serious condition or become cancerous. They may or may not require removal and there are a variety of ways to remove them that will be used based on the location of the tag and how big it is, as well as patient preference.

Preventing tags might not be possible, but some lifestyle changes might be helpful in avoiding them. Always see a doctor about a lump or a bump in the anal area, because it’s not possible to diagnose a skin tag by oneself, and anal skin tags cannot be removed at home. 

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Article Sources
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