Have you ever noticed the various spots appearing on your skin? While some you are born with, others develop over time. These are commonly known as moles, medically referred to as nevi. Because there is a lot of uncertainty surrounding them, it is natural to feel concerned. At Nirogi Lanka, we want to help you understand what these spots are and how to monitor them for your well-being.
What are moles, and what do they look like?
Simply put, moles are growths on your skin. They can match your natural skin tone or appear as brown or black patches. Moles can appear singly or in clusters, and they can develop anywhere on your body, including mucous membranes like your mouth or eyes.
Moles often begin to appear during childhood, with most developing by age 20. It is perfectly normal for an adult to have between 10 and 40 moles.
A typical mole often lasts about 50 years. Over time, these spots evolve; some may become raised or lighter in color, and you may even notice hair growing from them. While some remain stable, others may gradually fade away.
Are there different types of moles?
Yes, there are several distinct categories. Let’s look at the primary types:
Common Nevi
These are the most frequent, harmless skin spots. They typically appear pink, tan, or dark brown with distinct, well-defined edges.
Congenital Nevi
These are moles present at birth. Found in about one out of every 100 people, these spots have a slightly higher risk of developing into melanoma (a type of skin cancer) compared to ordinary moles. If a congenital mole is larger than 8 millimeters, it requires closer medical monitoring.
Dysplastic Nevi
These are irregular moles that are often larger than a pencil eraser. Dysplastic nevi often have uneven colors—dark brown centers with lighter, irregular edges. They are frequently hereditary, meaning they tend to run in families. Individuals with these moles might have over 100 on their body. If you have dysplastic nevi, you are at a higher risk for melanoma. It is essential to have any changes in these spots evaluated by a dermatologist.
How common are moles, and where do they typically appear?
Moles are very common, with most people having between 10 and 40. They tend to appear on sun-exposed areas of the body where ultraviolet (UV) radiation from the sun is most intense. You may have noticed that more moles appear after frequent sun exposure.
Common questions about moles
- Are moles contagious?
No, moles are not contagious.
- Are moles painful?
Typically, no. However, if you experience pain or tenderness in a mole, you should consult a dermatologist.
- Do moles itch?
If a mole becomes itchy, that is a warning sign that requires professional medical assessment.
- Is it normal for a mole to bleed?
No, if a mole is bleeding, you must seek medical advice immediately.
Are 'pigmented lesions' the same as moles?
Pigmented lesion is a general clinical term that includes common moles, sun freckles, and age spots (lentigines). While most are benign, if you have many moles or spots with an unusual appearance, routine skin checks with a dermatologist are vital. This allows for the early detection of suspicious changes. If a concern arises, the doctor may perform a skin biopsy—removing a small sample for microscopic analysis—to determine if the lesion is benign or if it is melanoma or another form of skin cancer.
What if I develop a new mole after age 30?
If you are over 30 and notice a new mole, you should monitor it closely. While it is often harmless, you should always have it checked by your physician.
Why do we get moles? (Causes)
Moles develop when skin cells called melanocytes grow in a cluster. These cells are responsible for producing melanin, the pigment that gives your skin its color. When they clump together, they form a mole.
What are the risk factors for increasing mole growth?
The primary factor is excessive exposure to the sun.
Why do moles turn darker?
Moles can become darker due to sun exposure, puberty, or pregnancy. During pregnancy, hormonal changes can cause uniform changes in size or color. However, if a mole changes irregularly or only on one side, it must be examined by a dermatologist.
Why should I keep a close eye on my moles?
Your skin is your body's largest organ. It is also one of the few you can visually inspect yourself. Being proactive about skin health is essential, especially if:
- You have very fair skin.
- You have numerous moles.
- You have a family history of many moles, atypical nevi, or skin cancer.
Beyond limiting sun exposure and applying sunscreen daily, checking your moles regularly increases the chances of early detection and successful treatment of melanoma and other skin cancers.
Dermatologists recommend conducting a self-exam at least once a month. While most moles are non-cancerous, if you notice a change in color, shape, or texture, consult a doctor. Additionally, report any bleeding, oozing, itching, crusting, or pain to a medical professional immediately. If you have an emergency, please contact 911 or your local emergency services.
What should I look for when checking my moles? (The ABCDE method)
Most moles are harmless. However, medically, you should pay attention to moles that look different from the rest of your moles (known as the "ugly duckling sign") and any new moles that appear after the age of 30. If you notice any changes in the color, thickness, size, or shape of a mole, you should see a dermatologist. Also, be alert for moles that bleed, ooze, itch, become scaly, or cause pain.
Examine your skin using a mirror or ask someone for help. Pay close attention to areas frequently exposed to sunlight, such as your face, arms, legs (especially for women), and your chest and back (especially for men).
The following ABCDE criteria are essential signs that a mole could potentially be cancerous. If your mole exhibits any of these features, see a dermatologist immediately:
- A – Asymmetry: If one half of your mole does not match the other. If you divide it in half, the two sides look different.
- B – Border: If the edges or borders of the mole are indistinct, blurred, or irregular.
- C – Color: If the color is not uniform and shows a mixture of colors (such as light brown, dark brown, black, blue, white, or red).
- D – Diameter: If the diameter of the mole is larger than a pencil eraser (about 6mm).
- E – Elevation/Evolution:If a mole was previously flat and suddenly becomes raised, or if the appearance, size, or shape of the mole changes rapidly within a short period.
In men, melanoma most commonly develops on the back. In women, it often appears on the lower legs. Melanoma is one of the most common cancers in women aged 25-29, making it vital to stay vigilant.
What does a dermatologist do if they suspect a mole is problematic?
Ordinary, benign moles do not need to be removed (as removal may leave a scar).
If your dermatologist suspects a mole, they will perform a skin biopsy. This involves taking a small sample of the mole to be examined under a microscope. A diagnosis can usually be made within a week. If the mole is confirmed to be cancerous, it must be completely removed.
If you feel a mole is changing or notice suspicious symptoms, please consult a dermatologist to have it examined.
Do moles need to be removed? How are they removed?
A normal mole does not necessarily need to be removed. If you choose to have it removed for cosmetic reasons, it will likely leave a scar.
Never attempt to remove a mole yourself. Some people try to remove moles or warts using over-the-counter creams, corrosive substances, freezing kits, or DIY laser methods. Doing so not only risks infection, but you might inadvertently miss an opportunity to catch a skin cancer like melanoma, which can lead to serious complications. If skin cancer is not identified early, it can spread to other organs. Recognizing an abnormal mole is the first step in prevention. Therefore, professional medical advice is mandatory.
Can I treat moles at home?
Doctors strongly advise not using any home remedies for moles. If you have concerns, please speak with a dermatologist.
What complications can arise from moles?
The most significant complication is the potential for some moles to develop into melanoma, a type of skin cancer.
Can moles be prevented? How can I protect my skin?
Moles are natural skin growths, so they cannot be completely prevented. However, you can be proactive in protecting yourself from skin cancer (or detecting it early). Here is how:
- Limit your exposure to direct sunlight. Be particularly careful during the peak intensity hours between 10 AM and 4 PM.
- Use sunscreen daily (at least SPF 30).
- Check your moles for abnormalities at least once a month.
These practices are vital for your health, especially if you have fair skin, many moles, or a family history of skin cancer.
How should I perform a skin self-examination?
Perform skin self-examinations every month. The best time is after a shower while your skin is still damp.
- If possible, use a full-length mirror and a handheld mirror to see clearly.
- Ask a family member to help check hard-to-see areas like your back.
- Try to follow the same routine every month so you don't miss any areas.
- Check from head to toe. Look at every part of your body (front, back, sides, and even nails).
- Don't forget “hidden” spots: between your fingers, between your toes, the groin area, soles of the feet, and behind the knees.
- Check your scalp and neck thoroughly.
- Keep a record of the moles on your body and their appearance. If possible, take a photo next to a ruler with the date. This helps you notice if a mole is changing.
- If they change in any way (color, shape, size, borders) or if you develop a sore that won't heal, consult a dermatologist. Show the doctor any new moles that concern you.
Remember, always be suspicious of a new mole that appears after age 30. While many growths after 30 are harmless and age-related, any new growth should be checked by a doctor. They can examine it and perform a skin biopsy if necessary.
Moles can appear anywhere on the skin, as well as on sensitive mucous membranes such as the mouth, eyes, or genital areas. If you have had a history of melanoma (or a strong family history), in addition to regular dermatological checks, it is a good idea to have these specific areas inspected annually by your dentist, eye doctor (ophthalmologist), and gynecologist.
Take-Home Message
To summarize, here are the essential points you should keep in mind:
- Moles are very common, and for most people, they are perfectly harmless. Please do not worry, as the vast majority are benign.
- Keep a close watch on the moles on your body. Check them yourself at least once a month, or ask a trusted person to help you examine areas you cannot see.
- Remember the ABCDE criteria we discussed. Look for these signs in your moles:
- Asymmetry (Is one half of the mole different from the other?)
- Border (Are the edges irregular, ragged, or blurred?)
- Color (Is the color uneven, with shades of brown, black, or other colors?)
- Diameter (Is it larger than the eraser on a pencil?)
- Evolution (Has it changed in size, shape, or height, or started bleeding?)
If you notice any of these signs, please consult a dermatologist immediately.
- Pay special attention to any new moles that appear after the age of 30.
- Never attempt to remove a mole at home. Doing so can lead to serious infection, scarring, or missed diagnoses.
- Protect your skin from the sun. Use sunscreen daily and limit your time in direct, harsh sunlight.
If you have even the slightest concern or question about your moles, do not keep it to yourself—speak with a healthcare professional. That is always the best course of action at Nirogi Lanka.
Keywords: Moles, nevi, skin cancer, melanoma, dermatology, skin spots, ABCDE, nevus, skin health
