Yes, moles can get bigger. However, it's important to understand the circumstances under which this occurs and when it might be a cause for concern.
When Mole Growth is Normal
Generally, moles are small, often less than 6mm in diameter (about the size of a pencil eraser), and consistent in color and shape. During childhood and adolescence, it's normal for new moles to appear and for existing moles to grow proportionally with the body. Hormonal changes, such as during pregnancy, can also cause moles to darken or increase in size.
When Mole Growth is a Concern
If you observe a mole that is rapidly growing, changing in shape (becoming asymmetrical), changing in color (especially if it has multiple colors or is darkening), or has an irregular border, it's crucial to consult a dermatologist. These changes could be indicative of melanoma, a serious form of skin cancer. Use the "ABCDE" rule to help identify potentially problematic moles:
- Asymmetry: One half of the mole doesn't match the other half.
- Border: The border is irregular, notched, or blurred.
- Color: The color is uneven, with shades of black, brown, and tan present. There may also be areas of white, gray, red, or blue.
- Diameter: The mole is larger than 6 mm (about the size of a pencil eraser), although melanomas can sometimes be smaller.
- Evolving: The mole is changing in size, shape, or color.
What to Do if a Mole is Changing
If you notice any of the above changes, schedule an appointment with a dermatologist as soon as possible. Early detection and treatment of melanoma significantly improve the chances of successful recovery. A dermatologist can perform a skin exam and, if necessary, a biopsy to determine if the mole is cancerous.
Summary
While some mole growth is normal, especially during youth or hormonal shifts, significant changes in size, shape, color, or border warrant immediate medical attention. Regular self-exams and professional skin checks are essential for maintaining skin health and detecting potential issues early.
