Moles are common skin spots resulting from the accumulation of pigment cells, and the various types of moles range from flat to raised, with colors varying from brown to black.
How Do Moles Form?
These marks arise when melanocytic cells, responsible for skin color, cluster together in one mass instead of spreading evenly through the epidermal layers. Genetic factors play a role in their appearance, while continuous exposure to sunlight, hormonal changes during pregnancy or adolescence, and the use of birth control pills can increase their number or alter their color.
Detailed Types of Moles
These skin lesions are classified based on when they appear and their characteristics:
- By time of appearance:
- Congenital: Present at birth or shortly after; often called birthmarks.
- Acquired: Appear during childhood or adolescence, and may emerge in later adulthood.
- By shape and characteristics:
- Typical: Normal moles with regular borders and a circular or oval shape.
- Atypical (Dysplastic): Characterized by a size larger than 6 mm, irregular borders, and mixed colors (such as red or gray); these are more prone to becoming tumors.
- Blue: Rare moles that appear as a deep blue color.
- Halo Nevus: The center fades in color with a blue ring around it, sometimes associated with vitiligo.
Benefits of Moles and Their Relation to Aging
Some research suggests a link between a high number of moles and delayed signs of aging. Specialists found that women with more than 100 moles tend to have stronger bones and a 50% lower probability of developing osteoporosis compared to those with fewer than 25. Additionally, they may contribute to a reduction in the appearance of wrinkles, highlighting some unexpected benefits of moles.
Moles and Their Danger Regarding Cancer
Most moles are benign, but some may develop into skin cancer (melanoma). The risk increases in the following cases:
- Having a very large number of moles (more than 100).
- The sudden appearance of new moles after age 20 or 25.
- Congenital moles that are large in size (especially if the diameter exceeds 19 cm).
- A family history of skin cancer.
When Should You Consider Mole Removal?
In most cases, moles do not require treatment, but surgical mole removal is pursued in the following instances:
- Medical reasons: If dangerous mole signs appear, such as bleeding or rapid growth.
- Cosmetic reasons: If the mole is disfiguring or located in an undesirable area, such as the face.
- Practical reasons: If it causes pain due to constant friction with clothing or during shaving.
Frequently Asked Questions
What are moles?
They are small, colored skin spots (brown or black) that appear individually or in groups, resulting from the concentration of pigment cells in the skin.
What causes moles on the body?
The causes include genetic factors, exposure to ultraviolet (UV) rays from the sun, hormonal changes, or a weakened immune system.
What moles are cancerous?
Cancerous moles are those that lose their regular circular shape, featuring jagged borders, inconsistent colors, a diameter exceeding 6 mm, or symptoms like itching and bleeding.
When Should You Visit a Doctor Immediately?
You should consult a dermatologist if you notice any of the following “warning signs” or if you are wondering what moles to get checked:
- A sudden change in the size, shape, or color of the mole.
- The appearance of uneven or jagged borders that look like “lace.”
- Severe itching, pain, or swelling at the site of the mole.
- Bleeding or discharge of pus from the mole without an injury.
- The sudden appearance of new, large moles.
Medical Disclaimer: This content is for informational purposes only and is not a substitute for professional medical advice.
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Illustration: AI-generated
approved by: Medica Health team