Moles on the Palm: What You Need to Know - Dermatology

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Mole on the palm?


Hello doctor, I would like to ask, if there is a mole near the base of the thumb on the palm, many people say that having a mole on the palm is not good.
It has been about a week, and the diameter is approximately 0.1-0.15 centimeters.
I saw the ABCDE method for checking moles online; does meeting any of those criteria mean I should pay special attention to it?

Jerry, 30~39 year old female. Ask Date: 2017/08/28

Dr. Wu Yuxin reply Dermatology


In principle, the more criteria that are met, the greater the likelihood of pathology; however, a pathological biopsy is still the primary determinant.

Reply Date: 2017/08/28

More Info


When it comes to moles on the palm, particularly near the thumb area, it’s understandable to have concerns, especially with the common belief that moles in such locations may not be favorable. The first thing to note is that moles, or nevi, are generally benign growths of skin cells that can appear anywhere on the body, including the palms. However, it is essential to monitor any changes in these moles, as they can sometimes indicate underlying issues.

The ABCDE rule is a helpful guideline for assessing moles and determining whether they may require further evaluation. Here’s a breakdown of what each letter stands for:
- A for Asymmetry: If you draw a line through the mole and the two halves do not match, it may be a cause for concern.

- B for Border: Moles with irregular, scalloped, or poorly defined edges should be examined more closely.

- C for Color: A mole that has multiple colors or an uneven distribution of color can be a warning sign.

- D for Diameter: Moles larger than 6mm (about the size of a pencil eraser) should be evaluated, although smaller moles can also be problematic.

- E for Evolving: Any changes in size, shape, color, or elevation, or any new symptoms such as bleeding, itching, or crusting, should prompt a visit to a healthcare provider.

In your case, the mole you described is relatively small, measuring about 0.1-0.15 cm, which is less than the typical threshold for diameter concerns. However, size alone is not the only factor to consider. You should also assess the mole for asymmetry, border irregularities, color variations, and any changes over time.

It’s also important to consider the context of the mole’s appearance. If it has changed in color, shape, or size, or if you notice any discomfort, itching, or bleeding, these are significant indicators that you should seek medical advice. Dermatologists often recommend a thorough examination of any new or changing moles, especially in areas that are less commonly exposed to sunlight, like the palms.

Additionally, while there are cultural beliefs surrounding moles and their meanings, it’s crucial to rely on medical advice and evidence-based practices when it comes to skin health. If you have concerns about the mole, it’s best to consult a dermatologist who can perform a thorough examination and, if necessary, a biopsy to rule out any malignancy.

In summary, while the mole on your palm may not seem alarming based on its size, it’s essential to monitor it for any changes and to consider the ABCDE criteria. If you have any doubts or if the mole exhibits any concerning characteristics, do not hesitate to seek professional medical advice. Regular skin checks and being aware of your skin’s health are vital components of preventive care.

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