Black Spots Around the Anus: Causes and Concerns - Surgery

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Black spots around the anal area?


Hello, doctor.
Recently, I noticed dark spots on both sides of the skin around my anus.
There is no discomfort, just sudden darkening.
(I have a problem with constipation and recently felt a small protruding lump inside the anus, but it doesn't hurt or bleed.) I am particularly concerned about the pigmentation and would like to know if you have encountered similar issues before.

Wo, 20~29 year old female. Ask Date: 2018/12/23

Dr. Xu Kaixi reply Surgery


Changes in the perianal skin cannot be diagnosed based solely on a textual description; it is recommended to visit a surgical clinic for examination.

Reply Date: 2018/12/23

More Info


The appearance of black spots around the anus can be concerning, and it's understandable that you are worried about this change in your skin. There are several potential causes for these black spots, and while many of them are benign, it is important to consider them carefully.

One common cause of dark spots around the anus is hyperpigmentation, which can occur due to various factors including friction, irritation, or even hormonal changes. If you have been experiencing constipation, the straining during bowel movements can lead to increased friction and irritation in the anal area, potentially resulting in darkening of the skin. Additionally, if you have been wiping more vigorously or using harsh soaps, this could also contribute to skin changes.

Another possibility is the presence of skin tags or benign growths, which can sometimes appear as small protrusions or bumps around the anus. These are generally harmless and can be caused by friction or irritation as well. However, if you notice any changes in size, color, or if they become painful, it would be wise to consult a healthcare professional.

In some cases, dark spots can be associated with more serious conditions, such as anal warts, which are caused by the human papillomavirus (HPV), or even melanoma, a type of skin cancer. While these conditions are less common, it is crucial to monitor any changes in your skin and seek medical advice if you have concerns.

Given that you mentioned you have a small protruding mass inside the anus, it is particularly important to have this evaluated by a healthcare provider. While it may not be painful or bleeding now, any new growth should be assessed to rule out any potential issues.

In summary, while the black spots you are observing could be due to benign causes such as hyperpigmentation or skin tags, it is essential to have any new or changing skin lesions evaluated by a healthcare professional. They can provide a proper diagnosis and recommend appropriate treatment if necessary. If you are experiencing constipation, addressing this issue through dietary changes, hydration, and possibly over-the-counter remedies may also help alleviate some of the irritation and prevent further skin changes. Always prioritize your health and do not hesitate to seek medical advice when you notice changes in your body.

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