Dermatology Surveillance
Planned skin checks to catch problems early
Quick Facts
- Type: Preventive medical monitoring
- Main goal: Early detection of skin cancer
- Common for: People with many moles or prior skin cancer
- Key tool: Full-skin exam, dermoscopy, photography
Overview
Dermatology surveillance is the practice of checking the skin on a regular, planned schedule to detect skin cancers and other concerning lesions while they are small and treatable. It is most often recommended for people at higher than average risk, such as those with a personal or family history of skin cancer, many or unusual moles, or a weakened immune system.
Finding skin cancers like melanoma, basal cell carcinoma, and squamous cell carcinoma early greatly improves outcomes and usually allows simpler treatment. Surveillance combines professional skin exams with skin self-checks done at home between visits.
What Surveillance Looks For
The aim is to spot spots and moles that are new, changing, or unusual. During exams and self-checks, attention is paid to:
- A mole that changes in size, shape, or color
- A spot with uneven borders or more than one color
- A new growth or sore that does not heal
- A lesion that itches, bleeds, or becomes crusty
- Any spot that looks different from a person's other moles (the "ugly duckling" sign)
The ABCDE guide (Asymmetry, Border, Color, Diameter, Evolving) is a simple way to remember warning features.
Who Needs Surveillance
Not everyone needs scheduled skin monitoring. It is most useful for people with one or more of these risk factors:
- A previous melanoma or other skin cancer
- A close family member with melanoma
- Many moles, or large or atypical (dysplastic) moles
- Fair skin that burns easily, light hair, or light eyes
- A history of significant sun exposure, sunburns, or tanning bed use
- A weakened immune system, including after an organ transplant
What a Skin Check Involves
A professional surveillance visit is usually quick and painless. A dermatologist will:
- Examine the skin from scalp to soles, often including the back, scalp, and between the toes
- Use a handheld magnifier called a dermatoscope to look closely at suspicious spots
- Sometimes take photographs to compare moles over time (mole mapping)
- Perform a small biopsy if a lesion looks concerning, removing a sample for laboratory testing
Between visits, regular skin self-examination at home helps catch changes early.
What Happens After a Finding
Surveillance itself is not a treatment; it guides what happens next. If a lesion looks suspicious, a biopsy is done to confirm whether it is cancer. Many concerning spots turn out to be harmless.
If skin cancer is found, treatment depends on the type and stage and may include minor surgery to remove the lesion, specialized procedures for certain skin cancers, or referral for further care if a melanoma is advanced. Catching these cancers early through surveillance usually means treatment is simpler and more successful. After treatment, surveillance often continues at closer intervals.
Self-Care and Sun Protection
- Do a full skin self-exam about once a month, using a mirror or a partner for hard-to-see areas
- Use broad-spectrum sunscreen and reapply it regularly outdoors
- Seek shade and wear protective clothing, hats, and sunglasses
- Avoid tanning beds
- Take photos of moles you are watching so you can notice changes
When to See a Doctor
Contact a dermatologist promptly, even outside your scheduled visit, if you notice:
- A mole or spot that is changing in size, shape, or color
- A new growth or a sore that will not heal
- A spot that bleeds, itches, or becomes painful
- A lesion that simply looks different from your other moles
Most skin changes are not cancer, but early evaluation is the safest approach, especially if you are at higher risk.
Frequently Asked Questions
How often should I have a skin check?
It depends on your risk. Many higher-risk people are seen every 6 to 12 months, while those with a history of melanoma may be checked more often. Your dermatologist will set a schedule based on your history and findings.
What is the ABCDE rule?
ABCDE stands for Asymmetry, Border irregularity, Color variation, Diameter larger than a pencil eraser, and Evolving or changing. These features in a mole are warning signs that should be checked by a dermatologist.
Does a skin check hurt?
A routine full-skin exam is painless and usually takes only a few minutes. If a spot looks concerning, a small biopsy may be done with local numbing, which causes only brief discomfort.
Can I just monitor my skin at home instead?
Self-exams are valuable and recommended, but they do not replace professional checks for higher-risk people. A dermatologist can spot subtle changes and examine areas that are hard to see yourself.
Are all changing moles cancer?
No. Many moles change harmlessly over time, and most spots checked during surveillance are not cancer. The goal is to identify the few that are concerning so they can be biopsied and treated early if needed.
References
- American Academy of Dermatology.
- Skin Cancer Foundation.
- National Cancer Institute (NCI). Skin Cancer.
- MedlinePlus, U.S. National Library of Medicine. Melanoma.