Causes of Bumps on Anus: Symptoms and Treatment

Bumps on anus can be a cyst, a hemorrhoid, or any other health issue that would require treatment. Avoid picking at any bump on the anus because it could lead to infection or other medical problems.

Types of Bumps

There are different types of bumps or pimples, they include:

  • Pustules: small raised pink or red bumps that contain pus.
  • Larger papule-like bumps: These are embedded in the skin are called nodules
  • Larger, pus-filled lumps: These are called cysts.

Nodules and cysts tend to be very painful. Pustule may itch and have a rough tip. Pustules or any kind of anal pimples can become more painful when moving, sitting, moving, sweating, or having bowel movements.

Causes of Bumps on Anus

A bump can develop on the anus when a pore gets clogged. A pore is a tiny hole in your skin that opens to a follicle just below the surface. A follicle contains a hair and an oil gland. However, oil glands can start producing excessive oil that causes the pore to clog. Causes of excess oil production include:


Sweat and moisture can become trapped against your skin, in any part of the body, including the anus.


Since stool is expelled from the rectum, the area contains a lot of bacteria. So, engaging in anal sexual activity can increase bacteria in this area.


Puberty, pregnancy, menstrual cycles, and stress, can cause changes in your hormonal levels. It can cause oil glands to produce too much oil.


You can inherit problems with pimples and other types of acne from your family.

Skin irritation

Prolonged sitting or wearing tight or sweaty clothes may irritate the skin, leading to an outbreak.


You may develop anal bumps if you fail to keep the area as clean as possible.


Consuming greasy foods or diets high in refined sugar or dairy may cause the formation of pimples and bumps.

Treating Bumps on Anus

Oral retinoids

These drugs are produced from vitamin A. They are also prescribed for other skin conditions apart from anal bumps or pimples.

Benzoyl peroxide

This medication comes in form of cream or topical ointment. It kills the bacteria causing pimples. However, be careful as it can bleach or stain fabrics.

Salicylic acid

This medication can be used to treat warts, acnes, psoriasis, and other skin issues. It comes in many forms, including soaps, ointments, creams, and pads.

Additional Tips

Consult your doctor immediately for proper diagnosis if you feel a bump in your anus and believe it is not an anal pimple.

  • Avoid squeezing or picking at an anal pimple
  • Wipe thoroughly after every bowel movement.
  • Wash your anus and buttocks with soap and water when bathing and showering.
  • Wear clean cotton underwear, which tends to breathe more than other fabrics.
  • Remove wet underwear and bathing suit.

Other Conditions that May Mimic Anal Bumps or Pimples


An anal abscess is quite painful. It is an infection that results in a collection of pus in the deeper layers of the skin. People normally experience a lot of inflammation at the abscess site. It can be treated by surgical drainage and antibiotics.


A hemorrhoid is an engorged vein that lies just under the skin on the anus. A blood clot can lead to pain. If the bump is painful, it may be a hemorrhoid. An hemorrhoid can bleed when you make bowel movements.

Pilonidal cyst

A pilonidal cyst usually develops near the top of the crack in your buttocks. A pilonidal cyst starts as a small sac or pocket of skin that gets clogged with oil and skin debris. A pilonidal cyst can become an extremely painful abscess if it gets infected.

Sexually transmitted disease (STD)

STDs like genital herpes, can cause pimple-like bumps to develop around your anus and pubic area. These conditions are viruses and usually don’t present as just one or two bumps.

Anal cancer

Anal cancer occurs when cancerous cells develop in the tissue of the anus. Early symptoms include bleeding from the rectum and formation of a painful and itchy lump around the opening of anus. Anal cancer can cause changes in bowel movements.

Anal warts

Anal warts are caused by the most common sexually transmitted disease called the human papillomavirus (HPV). Anal warts start out very small and can grow to be large, and even occupy much of the anus.

Molluscum contagiosum

Molluscum contagiosum is a virus that can be transmitted through skin-to-skin contact. Symptoms are small pink or reddish bumps. Molluscum bumps are usually smooth, they can grow large, but tend to be painless.


Disclaimer: The content provided on is purely informative and educational in nature and should not be interpreted as medical advice. Please use the content only in consultation with an appropriate certified medical doctor or healthcare professional.


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