New Black Mole on Palm: When to Worry and Seek Dermatological Advice

A new black mole has appeared on the palm?

Hello, Doctor: I discovered a new black mole on the palm of my hand today.
Since I don't have any moles on my hands, I noticed this one immediately.
The mole is quite dark in color, but it's very small, about 1mm or even a little less.
However, it has a crescent shape rather than being round (upon closer inspection), and it doesn't appear to be perfectly circular...
It looks somewhat like two small dots made by a fine-tipped pen, but due to the deep color, it stands out a bit, as if it just appeared.
(Does the color of a newly formed mole change?) I've heard that moles that suddenly appear on the palms or soles are not a good sign, which makes me a bit worried.
But going to see a dermatologist for something so small seems a bit excessive...
If it's such a small mole, would a doctor perform a biopsy? Is it common to develop black moles on the hands? When should I see a doctor regarding a mole? (The examples I've seen are quite alarming...) I really appreciate you taking the time to respond amidst your busy schedule.
Thank you.

Mo Mo, 10~19 year old female. Ask Date: 2007/01/26

Dr. Jiang Zheen reply Dermatology

Moles on the hands are also common.
Based on your description, you only need to observe them for now.
If there is an increase in size (1/2 to 1/3 larger over 1-2 months), asymmetrical growth, or changes in color, then you should see a doctor.
Wishing you peace, and Jesus loves you.

Reply Date: 2007/01/26

More Info

When it comes to the appearance of a new black mole on your palm, it is understandable to feel concerned, especially given the characteristics you described. The fact that it is small (around 1mm) and has an irregular shape can be a cause for caution. Moles, or nevi, can vary widely in appearance, and while many are benign, certain features can indicate a need for further evaluation.

Firstly, it's important to understand that new moles can develop at any age, and while some may be harmless, others can be precursors to skin cancer, particularly melanoma. The ABCDE rule is a helpful guideline for assessing moles:
- Asymmetry: If you draw a line through the mole and the two halves do not match, it could be a concern.

- Border: Irregular, scalloped, or poorly defined edges are a warning sign.

- Color: A variety of colors (brown, black, tan, red, white, or blue) within the same mole can be problematic.

- Diameter: Moles larger than 6mm (about the size of a pencil eraser) should be evaluated.

- Evolving: Any change in size, shape, color, or elevation, or any new symptom such as bleeding, itching, or crusting, warrants a visit to a dermatologist.

In your case, the irregular shape and the fact that it is a new growth on your palm are significant factors. While it is true that many new moles are benign, the location (palm) and the characteristics you described (irregular shape, dark color) suggest that it would be prudent to seek a professional evaluation. Dermatologists often recommend monitoring moles for changes, but when a new mole appears, especially with atypical features, it is wise to err on the side of caution.

Regarding your question about whether a dermatologist would perform a biopsy on such a small mole, it depends on the clinical judgment of the physician. If the mole exhibits concerning features, a dermatologist may recommend a biopsy to rule out malignancy. This procedure involves removing a small sample of the mole for laboratory analysis, which can provide definitive information about its nature.

It is also worth noting that while the appearance of new moles can be common, especially in younger individuals, any sudden changes in the skin, particularly in areas that are less exposed to the sun, should be taken seriously. The skin on the palms and soles is different from other areas of the body, and the development of new moles in these regions can sometimes indicate a higher risk for certain skin conditions.

In summary, while it may feel like an overreaction to seek dermatological advice for a small, new mole, it is always better to be safe than sorry. If you notice any changes in the mole or if it begins to exhibit any of the ABCDE characteristics, do not hesitate to make an appointment with a dermatologist. Regular skin checks and being proactive about any changes can significantly contribute to early detection of potential skin issues, including skin cancer. Remember, your health and peace of mind are paramount, and a professional evaluation can provide clarity and reassurance.

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