Mole Growth Speed and When to Seek Medical Attention - Dermatology

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The growth rate of moles, excluding bleeding?


Hello Doctor: Recently, I have developed many moles on my body.
One black mole on my abdomen has gradually formed and become raised over the past three to four weeks.
Today, I accidentally scratched it off, and I noticed bleeding after the mole fell off.
I would like to ask about the typical growth rate of normal moles and whether they can be easily picked off like this.
Should I seek a medical examination? Thank you!

Nien, 20~29 year old female. Ask Date: 2021/07/31

Dr. Li Yufen reply Dermatology


Hello: If a common mole grows too quickly, or shows changes in shape, color, or bleeding, there may be concerns about the possibility of malignancy.
For a detailed introduction to melanoma, you can refer to the article on Care Online: https://www.careonline.com.tw/2017/07/melanoma.html.
If the skin condition does not improve or worsens, it is advisable to consult a nearby dermatologist for diagnosis and to assess whether further examination and treatment are necessary: http://www.derma.org.tw/user_finddoctor.php.
Thank you!

Reply Date: 2021/07/31

More Info


When it comes to the growth of moles (nevi), it is essential to understand that while most moles are benign, changes in their appearance or growth patterns can sometimes indicate a potential risk for skin cancer, particularly melanoma. The speed at which a mole grows can vary significantly from person to person and can depend on various factors, including genetics, sun exposure, and hormonal changes.
Typically, benign moles grow slowly and may remain stable for years. However, if you notice a mole that is changing in size, shape, color, or texture, or if it becomes itchy, painful, or bleeds, it is crucial to seek medical attention. The fact that you mentioned a black mole on your abdomen that has been gradually forming and has now become raised is noteworthy. The sudden change in its appearance, especially if it has developed a raised profile, could be a cause for concern.

In general, normal moles are usually uniform in color (typically brown or tan), round or oval in shape, and have well-defined edges. They do not typically bleed or itch. If a mole starts to exhibit asymmetry, irregular borders, multiple colors, a diameter larger than a pencil eraser, or any other unusual characteristics, these are warning signs that should prompt a visit to a dermatologist.

Regarding your specific situation, since you accidentally removed the mole and it bled, it is advisable to see a healthcare professional. They can assess the area for any signs of infection and evaluate the mole's characteristics before it was removed. Even if the mole appears to have been benign, the fact that it was removed in a non-medical setting means that a thorough examination is warranted. A dermatologist may recommend a biopsy to determine whether any atypical cells were present.

In terms of mole growth speed, while some moles can grow quickly, others may take years to change. It is essential to monitor any moles you have and to be aware of any changes. If you notice multiple new moles appearing, this could also be a sign of a skin condition that warrants further investigation.
In summary, while many moles are harmless, any changes in their appearance or the development of new moles should be taken seriously. Given your recent experience with the mole on your abdomen, I strongly recommend scheduling an appointment with a dermatologist for a thorough evaluation. They can provide guidance on monitoring your skin health and advise on any necessary follow-up care. Remember, early detection is key in managing skin conditions effectively, especially when it comes to potential malignancies like melanoma.

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