Most moles are harmless. But a mole is not going to schedule its own appointment. If you are wondering when to get a mole checked, do not wait for it to become enormous, jet black, or obviously alarming. The most useful clues are often simpler: it is new, it is changing, it looks different from your other spots, or it has started itching, bleeding, crusting, or hurting.
The 30-second version: New. Changing. Different from your other spots. Itching, bleeding, or not healing. Any one of those is a reason to have it looked at. Most moles turn out to be fine; the point is to stop guessing. The rest of this article explains what to watch for, what a skin check involves, and what to do in the meantime.
And do not focus only on moles you have had for years. Skin cancer can also appear as a completely new spot. Knowing what is normal for your skin—and noticing what is not—is the point.
When should you get a mole checked?
Make an appointment with a dermatologist when you notice any of the following:
- A new spot that persists, particularly one that appears later in adulthood
- A mole changing in size, shape, color, thickness, or elevation
- A spot that looks noticeably different from the rest of your moles—the “ugly duckling”
- Bleeding without an obvious injury
- Persistent itching, pain, tenderness, crusting, oozing, or repeated scabbing
- A sore that does not heal or that heals and then returns
- A dark band beneath a nail or pigment spreading onto the surrounding skin
- A spot on the palm, sole, scalp, between the toes, or another area you do not routinely see
- Any change that is happening over weeks or months rather than years
None of these findings automatically means cancer. Irritation, trauma, benign growths, and inflammatory skin conditions can produce similar symptoms. But these are reasons to stop guessing and have the area examined.
Use the ABCDE rule—but do not stop there
The ABCDE rule is a useful way to remember common melanoma warning signs:
- A — Asymmetry: one half does not match the other
- B — Border: irregular, scalloped, blurred, or poorly defined edges
- C — Color: multiple colors or a meaningful change in color
- D — Diameter: larger lesions deserve attention, although melanoma can be smaller than a pencil eraser
- E — Evolving: any change in size, shape, color, surface, or symptoms
Evolving is often the most important part. A mole can look fairly ordinary in a single photograph and still deserve evaluation because it has changed. The “ugly duckling” concept matters too: if one spot does not resemble the rest of your personal mole pattern, show it to a dermatologist.
For a deeper visual guide, read our article on the ABCDEs of a changing mole.
How to check your own skin without driving yourself crazy
A skin self-exam is not about diagnosing yourself. It is about learning your baseline so you can recognize a meaningful change.
- Use a well-lit room, a full-length mirror, and a handheld mirror.
- Check the front, back, and sides of your body.
- Look at your scalp, behind the ears, underarms, palms, fingernails, soles, toenails, and between the toes.
- Ask a partner to check your back, scalp, and other hard-to-see areas.
- Photograph spots you are monitoring with consistent lighting and a ruler for scale.
- Do not rely on memory alone; side-by-side photographs are often more useful.
Many clinicians recommend regular self-checks—often about monthly for people at increased risk—but there is no single schedule that fits everyone. Ask your dermatologist how often you should check based on your history, number of moles, skin type, and previous findings.
Skin cancer does not belong to one skin tone
People with deeply pigmented skin have a lower overall melanoma risk than people with lighter skin, but they are not immune. Skin cancer may also be recognized later when patients and clinicians are not expecting it.
On melanin-rich skin, pay particular attention to the palms, soles, nails, and other less sun-exposed areas—while still checking the entire body. A dark streak under a nail, a changing spot on the sole, or a sore that does not heal should not be dismissed. Read more about skin-cancer warning signs in darker skin tones.
Who may need professional skin checks?
There is no universal “every adult must have a yearly skin exam” rule. The U.S. Preventive Services Task Force has concluded that evidence is currently insufficient to recommend routine clinician screening for every asymptomatic adolescent and adult. That statement does not apply to someone who has a suspicious spot or certain higher-risk histories.
A dermatologist may recommend periodic professional examinations if you have factors such as:
- A personal history of melanoma or another skin cancer
- A first-degree relative with melanoma
- Many moles or clinically atypical moles
- A history of blistering sunburns, substantial cumulative sun exposure, or tanning-bed use
- A weakened immune system, including after an organ transplant or from certain medications or illnesses
- A previous biopsy showing an atypical lesion
- A new, changing, symptomatic, or otherwise suspicious spot
The right interval might be annual, more frequent, less frequent, or symptom-driven. Your risk—not a generic calendar—should determine the plan.
What happens during a dermatologist mole check?
A professional skin cancer screening and full-body skin examination usually begins with your personal and family history, previous biopsies, sun exposure, medications, and the specific spot that concerns you.
Depending on the reason for the visit and your risk, the examination may include:
- A head-to-toe visual examination
- Comparison of the concerning spot with your other moles
- Dermoscopy, using a lighted magnifying instrument to examine structures below the surface
- Clinical photography or measurement when monitoring is appropriate
- A skin biopsy if the diagnosis cannot be made confidently by examination alone
Not every mole needs to be removed. Most do not. The goal is to identify which spots can be safely observed, which need monitoring, and which should be sampled or removed.
What should you do while waiting for the appointment?
- Take a clear photograph with a ruler beside the spot.
- Write down when you first noticed it and what has changed.
- Avoid picking, cutting, burning, freezing, or applying wart remover or acid to it.
- Do not cover it with makeup before the appointment if you want it examined accurately.
- Call the office again if it is changing rapidly, bleeding repeatedly, becoming painful, or failing to heal.
A smartphone photograph or app may help you document change, but it cannot reliably determine whether a lesion is benign or cancerous. A suspicious spot still needs a trained clinical examination.
Frequently asked questions
Does an itchy mole mean cancer?
Not necessarily. Friction, eczema, product irritation, and other benign causes can make a mole itch. Persistent itching—especially with change, bleeding, crusting, or pain—is worth evaluating.
Should every new mole be biopsied?
No. Dermatologists assess the lesion’s pattern, your age, location, history, symptoms, and dermoscopic features. Some spots can be photographed and monitored; others need biopsy.
Is a mole dangerous only if it is larger than 6 millimeters?
No. The diameter guideline is useful, but melanomas can be smaller. A changing or unusual small spot can still need evaluation.
How often should I have my moles checked?
There is no single interval for everyone. People with concerning lesions or higher-risk histories may need regular follow-up, while others may be evaluated when a new concern appears. Your dermatologist should individualize the schedule.
Can I just remove a mole because it bothers me?
Possibly, but the lesion should be diagnosed first. Medical, diagnostic, and cosmetic considerations determine whether observation, shave removal, excision, or biopsy is appropriate. Learn more about mole evaluation at Borealis Dermatology.
The bottom line
You do not need to panic over every brown spot. You also should not spend six months staring at a mole and hoping it explains itself.
New. Changing. Different. Itching. Bleeding. Not healing. Those are reasons to get it checked.
Borealis Dermatology offers mole evaluation and skin cancer screening in Garden City, Syosset, and Bellerose, New York. Request an appointment for an individualized examination.
Trusted Sources & Related Reading
- American Academy of Dermatology: How to perform a skin self-exam
- American Academy of Dermatology: ABCDEs of melanoma
- U.S. Preventive Services Task Force: Skin cancer screening recommendation
- Borealis Dermatology: Skin Cancer Screening & Full-Body Skin Examination
This article is for general educational purposes and is not a substitute for an individual medical evaluation.