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Why Do Moles Grow Black Hair?

by
author image Sunny de Fortuna Rovescio
Sunny has been a freelance editor since 1988 for dozens of publishers.
Why Do Moles Grow Black Hair?
A dermatologist is looking at a person's mole. Photo Credit Wavebreakmedia Ltd/Wavebreak Media/Getty Images

Whether you call it a mole or a beauty mark, many people consider a pigmented spot or bump less beautiful when hair seems to be growing out of it. Pigmented spots and bumps are formed by a type of cell found in the skin called a melanocyte. These pigment-producing cells give our skin its color, and when groups of melanocytes cluster together in large numbers, they produce a small darker area, often raised, known as a common mole. If a hair follicle happens to be in the midst of the clustered melanocytes, the mole will appear to sprout hair, which can be black or other colors. The hair is actually coming from the follicle -- it is not produced by the mole itself.

Significance of Hairy Moles

Many people have heard that a mole with hair is more likely to become cancerous than other moles or that removing the hair can cause or trigger cancer. There is no scientific evidence for these statements. Because hair is produced by an entrapped hair follicle and not the mole itself, neither the presence of hair nor the process of removing it has any affect on whether the mole will develop into a cancer. Other features of a mole, however, can indicate a higher risk of melanoma, so it's important to bring any unusual or changing mole to your doctor's attention.

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When to See a Doctor

Regardless of whether your mole has hair, it's wise to keep an eye on it and look for the "ABCDE" signs that might indicate cancerous changes. See your doctor if you notice that your mole has an **asymmetric** appearance, irregular **borders**, **color** variation or unusual coloring, **diameter** larger than the size of a pencil eraser or **evolution**. Evolution refers to changes, such as itching, bleeding, crusting or increasing size. You should also visit your doctor if a new mole appears after your 30th birthday.

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