It is perfectly normal to ask questions when observing a mole that is growing or changes its appearance. The molesNevi, or moles, are clusters of melanocytes (pigment cells) and, in the vast majority of cases, are perfectly benign. However,evolution of their size is the most important warning criterion in screening for melanoma, a potentially serious form of skin cancer.
Understand why a mole grows And knowing how to differentiate between normal development and a sign of malignancy is crucial. As an expert center in dermatological surgery in Paris, the Yaphé Clinic guides you to monitor your skin effectively.
Common causes of an increase in the size of a nevus
If you see a mole that is growingThis does not automatically mean there is danger. There are several reasons, most often benign, that explain why a nevus might increase in size.
1. Normal growth and age factors
The growth of nevi is part of normal skin development.
- Childhood and Adolescence: Most moles appear during childhood and adolescence. Their number and size naturally increase with body growth and skin maturation. mole can therefore swell alongside the child or adolescent.
- Hormonal Factors: Major hormonal changes, such as those that occur during the pregnancy or at puberty, can stimulate melanocytes and lead to a temporary increase in size and pigmentation of existing moles.
2. Atypical nevi
Some moles are simply "atypical" by nature (we are talking about dysplastic nevusThese lesions are benign, but they can be larger (often more than 6 mm), have irregular borders, or an uneven color. An atypical nevus is, by definition, different from a common nevus and may have a growth rate that appears faster or more pronounced.
3. The influence of sun exposure
The exhibition at UV rays (sun or tanning beds), especially if intense and repeated (sunburn), is a major factor in the appearance of new nevi and in the modification of existing ones. Unprotected exposure can accelerate cell renewal and melanin production, making the darker mole or making him swell faster. That's why sun protection is the first preventive measure.
When is an increase in size a warning sign?
The major concern related to a mole that is growing is the suspicion of melanomaMelanoma is a malignant tumor which, if not treated early, can be very dangerous.
The rapid change in size The appearance of a lesion is one of the most alarming signs. To help you monitor your moles and determine if their development is abnormal, dermatologists use the ABCDE rule.
The ABCDE Rule: A Self-Assessment Tool
The letter "E" in this acronym is the most relevant to answering the question " Why does a mole grow? "in a suspicious context."
| Criterion | Meaning | What should raise concern (Evolution) |
| A | Asymmetry | One half is not like the other. |
| B | Irregular Edges | Poorly defined, jagged or blurred outlines. |
| C | Non-homogeneous color | Presence of several colours (black, brown, red, blue, white). |
| D | Diameter | Generally greater than 6 millimeters (the size of a pencil eraser). A melanoma is often larger. |
| E | Evolution (the most important criterion) | The mole is growing (in size or thickness), changes shape, color, or becomes symptomatic (itching, bleeding). |
If you notice that your mole grows rapidly (over a few weeks or months) and that this increase in size is accompanied by other changes (irregular edges, uneven color), a urgent dermatological consultation is imperative.
Treatment by the Yaphé Clinic in Paris
Facing a mole that is growing, the expertise of a dermatologist surgeon is the guarantee of an accurate diagnosis and safe treatment.
- Dermatoscope Examination: At the Yaphé ClinicWe perform a thorough examination (dermatoscopy) to analyze the internal structure of the nevus, which allows us to distinguish a simple benign growth from an abnormality.
- Surgical Excision: If the nevus is deemed suspicious (even a benign nevus that grows and becomes bothersome), the only curative and diagnostic treatment is...surgical excisionThe entire lesion is removed under local anesthesia.
- Histological Analysis: The sample is systematically sent to a laboratory for analysis. anatomopathological analysisThis examination will confirm the exact nature of the lesion, and is essential to formally rule out a diagnosis of melanoma.
In conclusion: The criterion "E for Evolution" (which includes the fact that a mole growsThis is the most vital thing to monitor. If you have the slightest doubt about the development of a spot on your skin, don't wait and consult a skin specialist in Paris.
Your Skin Health is Our Priority
If one of your moles shows a noticeable change (enlargement, change in color, itching), a quick and professional assessment is essential.
Don't wait for an expert assessment. Book an appointment today at the Yaphé Clinic, your specialist in dermatological surgery in Parisfor comprehensive screening and tailored care.
Schedule an appointment with a Lipoma Specialist Surgeon at the Yaphé Clinic