Black Spots on the Genitals: When to See a Dermatologist

There is a small black mole at the base of the penis?

Hello, doctor.
A few weeks ago, I visited a dermatologist because I had noticed a black mole on my scrotum that had been there for a long time.
The doctor used some kind of light to examine it and said to just monitor it for now; it was approximately 0.3 cm in size.
Today, after taking a shower, I accidentally noticed a small black mole at the base of my penis, which I hadn't seen before because it was usually covered by pubic hair.
I measured it myself, and it's about 0.1 cm, not raised, just a small black dot.
I would like to ask if it's normal for people to have moles in their genital area.
I initially thought that moles only developed from sun exposure.
Should I consult a dermatologist every time I find a new one? I've already been twice; the first time was during a follow-up for paronychia when I also inquired about a black spot on my foot.
The doctor there also advised me to occasionally monitor it for any changes since it was really small, less than 0.1 cm.

Mr. Chen, 20~29 year old female. Ask Date: 2020/03/09

Dr. Wu Yuxin reply Dermatology

It is normal for moles to appear in the genital area.
However, moles should be examined to make an initial assessment.

Reply Date: 2020/03/09

More Info

When it comes to the appearance of black spots on the genitals, it is understandable to feel concerned, especially if you have already been to a dermatologist for similar issues. The presence of moles or dark spots in the genital area can be quite common, and many individuals may have them without any underlying health concerns. However, it is essential to approach this matter with caution and awareness.

Firstly, it is important to recognize that moles, or nevi, can appear anywhere on the body, including the genital region. These spots can be benign and may develop due to a variety of factors, including genetics, hormonal changes, and sun exposure. While sun exposure is a well-known factor for the development of skin lesions, it is not the only one. Moles can also form in areas that are not typically exposed to sunlight, such as the genital area.

In your case, you mentioned that you have a small black spot on the base of the penis that measures approximately 0.1 cm and is not raised. This is a positive sign, as benign moles are often flat and uniform in color. However, it is crucial to monitor any changes in size, shape, color, or texture over time. If the mole begins to grow, change color, or exhibit irregular borders, it is advisable to seek medical attention promptly.

Regarding your question about whether it is necessary to visit a dermatologist every time you discover a new spot, the answer is somewhat nuanced. If you notice a new mole or spot that is significantly different from your existing moles, or if it exhibits any of the concerning features mentioned above, it is wise to consult a dermatologist. Regular check-ups can help ensure that any potential issues are caught early, especially in areas that are less visible and harder to monitor.

In general, dermatologists recommend performing regular self-examinations of your skin, including the genital area, to become familiar with your moles and any changes that may occur. This practice can help you identify any new growths or changes more easily. If you have a family history of skin cancer or personal risk factors, such as previous skin cancers or atypical moles, it may be beneficial to have more frequent dermatological evaluations.

In summary, while the presence of black spots or moles in the genital area can be normal, it is essential to remain vigilant. Regular self-examinations, awareness of changes, and consultations with a dermatologist when necessary are key components of maintaining skin health. If you have any doubts or concerns, do not hesitate to reach out to a healthcare professional for guidance. Your health and peace of mind are paramount, and it is always better to err on the side of caution when it comes to skin changes.

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