Is it normal for moles to grow?

Why This Happens

There are several common reasons why a mole might appear to be changing or increasing in size over time, and many of these are benign processes.

• Natural Growth and Aging: As your body grows and your skin stretches, moles may naturally expand. Some moles also evolve slowly over decades, becoming more raised or slightly larger as you age.
• Hormonal Fluctuations: Changes in hormones—such as those occurring during puberty, pregnancy, or menopause—can influence the size, color, and number of moles on the body.
• Sun Exposure: While sun exposure often creates new spots, it can also affect the pigmentation and appearance of existing moles, making them seem more prominent.

What It Might Mean in Your Situation

Whether a growing mole is a cause for concern usually depends on the pattern of growth and the characteristics of the spot. Nuance is key here: a mole that has grown one millimeter over ten years is viewed differently than one that has grown significantly in two months.

Consider the following factors to help you understand the situation:

• Timing: Has the growth happened gradually over years, or was it sudden?
• Symmetry: Does the mole remain a consistent circle or oval, or has it developed an irregular, jagged border?
• Color Consistency: Is the mole one solid shade of brown or tan, or has it developed multiple colors (black, blue, red, or white) within the same spot?
• Associated Symptoms: Is the mole itching, bleeding, or crusting? These are often signs that the skin is reacting to something and needs a professional look.

What To Do About It

If you notice a mole is growing, the best approach is a combination of self-monitoring and professional consultation.

1. Perform a Self-Check: Use the “ABCDE” method (Asymmetry, Border, Color, Diameter, Evolving) to document the mole. Take a clear photo with a coin next to it for scale so you can compare it in a month.
2. Schedule a Professional Exam: Contact a primary care provider or a dermatologist. Use wording like: “I’ve noticed a mole on my [location] that seems to be growing, and I would like a professional skin check for peace of mind.”
3. Follow the Recommended Plan: Based on the exam, the professional may suggest “watchful waiting” (checking it again in six months), a biopsy, or simple removal if the mole is in a place where it gets irritated by clothing.

Real-Life Example

Sarah noticed a small mole on her shoulder that she had since childhood. Over a few years, she realized it looked slightly larger. Instead of worrying, she took a photo of it and noted its size. During her annual physical, she mentioned the change to her doctor. The doctor examined it and determined it was a common benign nevus that had simply grown as she transitioned into adulthood. Because she caught the change early and had it documented, she felt confident in the diagnosis and continued her regular yearly checks.

Related Questions

• Do moles disappear with age?
• How do I perform a skin self-exam?
• What is the difference between freckles and moles?
• When should I see a dermatologist for moles?

When To Seek Outside Help

Because changes in skin pigmentation can be related to serious medical conditions, you should seek help from a licensed medical professional immediately if a mole is bleeding, itching, growing rapidly, or changing colors. Outside help is essential for an accurate diagnosis, as home-monitoring is a supplement to—not a replacement for—professional medical care.