Also called nevi
Skin cancer screening: If a mole starts to grow, itch, or bleed, make an appointment to see a dermatologist.
Moles are common. Almost every adult has a few moles. Adults who have light skin often have more moles. They may have 10 to 40 moles on their skin. This is normal.
You should not be overly worried about your moles. But you should know:
- A type of skin cancer, melanoma, can grow in or near a mole.
- Caught early and treated, melanoma can be cured.
- The first sign of melanoma is often a change to a mole — or a new mole on your skin.
- Checking your skin can help you find melanoma early. A dermatologist can show you how to examine your skin and tell you how often you should check your skin.
If a mole starts to grow, itch, or bleed, make an appointment to see a dermatologist.
Moles: Who gets and types
Almost every adult has a few moles. Most adults have a type of mole called a common mole.
There are other types of moles. Some types increase a person’s risk for getting melanoma, a type of skin cancer. These moles are described below.
Atypical mole (dysplastic)
This type of mole can look like melanoma. It is not melanoma. But you have a higher risk of getting melanoma if you have:
- 4 or more atypical moles.
- Already had a melanoma.
- A first-degree relative (parent, brother, sister, or child ) who had melanoma.
Your dermatologist may call an atypical mole a dysplastic (dis-plas-tic) nevus. Atypical moles are often:
- Larger than an eraser on the end of a pencil.
- Have an odd shape (not round).
- Show more than 1 color — mixes of tan, brown, red, and pink.
Atypical moles can appear anywhere on the body. They often appear on the trunk. And they may appear on the scalp, head, and neck. Atypical moles rarely appear on the face.
Some people who have many atypical moles have a medical condition called familial atypical multiple mole-melanoma (FAMMM) syndrome. People with FAMMM syndrome have:
- Many moles — more than 50.
- Some moles that are atypical.
- A blood relative who has (or had) melanoma.
Atypical moles: Melanoma can grow in an atypical mole. Anyone who has atypical moles, such as this patient, should watch his or her moles for change.
Nevus is the medical term for mole. When your dermatologist is talking about 2 or more moles, your dermatologist may say nevi.
Your dermatologist may call your mole a nevus.
When a person is born with a mole, the mole is called a congenital mole. Roughly, 1 out of 100 people is born with a mole. These moles vary in size from small to giant. Having giant congenital moles increases a person’s risk of developing melanoma.
Congential mole: This congenital mole was small when the girl was born. When it started to grow, her dermatologist removed it.
This mole often looks like melanoma. It can so closely resemble melanoma that a dermatologist cannot tell by looking at it. That’s because this mole is often is pink, raised, and dome-shaped. It also can have different colors in it such as red, black, and brown. The mole may bleed. It can have an opening that oozes.
Most Spitz nevi appear on the skin during the first 20 years of life. Spitz nevi also develop in adults.
Spitz nevus: This type of mole is often pink, raised, and dome-shaped.
Acquired mole (50 to 100 or more)
When a mole appears on the skin after a person is born, it is called an acquired mole. Most people who have light skin have about 10 to 40 of these moles. These moles also are called common moles.
If a person has 50 or more of these moles, the person has a higher risk for getting melanoma.
Moles: Diagnosis, treatment, and outcome
How do dermatologists tell whether a spot is a mole?
A dermatologist’s trained eye can often tell whether a spot is a mole.
How do dermatologists treat moles?
Most moles do not require treatment. A dermatologist will remove a mole that:
- Bothers a patient (rubs against clothing, etc.).
- A patient finds unattractive.
- Could be skin cancer.
A dermatologist can remove a mole during an office visit. A few moles will require a second visit. Whether it’s during 1 or 2 visits, a dermatologist can safely and easily remove a mole. A dermatologist will use 1 of these procedures:
- Surgical excision: The dermatologist cuts out the entire mole and stitches the skin closed. If the dermatologist suspects that the mole contains cancer, the dermatologist will send the mole to a lab. It will be examined under a microscope. This is called a biopsy.
- Surgical shave: The dermatologist uses a surgical blade to remove the mole.
Note: Never try to shave off a mole at home.
Here’s why you should never try to shave off a mole at home:
- If the mole contains skin cancer, some of the cancer cells can stay in the skin — and even spread.
- You can disfigure your skin, causing a scar or other permanent reminder.
- You can cause an infection.
After a mole is removed, the skin will heal. If the mole grows back, immediately make another appointment to see your dermatologist. This is a sign of melanoma, a type of skin cancer.
Moles: Tips for managing
Dermatologists recommend the following to their patients:
- If you see a mole on your skin that is changing, itching, or bleeding, make an appointment to see a dermatologist. These are signs of melanoma, a type of skin cancer. Caught early, melanoma can be cured. Without treatment, melanoma can spread. This can be deadly.
- Perform self-exams of your skin. A self-exam can help you catch melanoma early.To help you learn how to check your skin, know what to look for, and draw what you see on your skin, go to:
- Protect your skin from the sun. It is believed that being out in the sun increases the number of moles on your skin. And we know that the sun causes skin cancer. Tanning beds and sun lamps also cause skin cancer.An easy way to reduce your risk of getting skin cancer is to skip getting a tan. You also should wear sunscreen every day.