What Happens at a Skin Cancer Screening? A Step-by-Step Walkthrough

Skin cancer is the most common cancer in the United States, and one of the most preventable and treatable when caught early. Yet many people put off getting screened simply because they don't know what to expect. If you've never had a skin cancer screening before, or if it's been a while since your last one, this guide will walk you through exactly what happens so you can walk in feeling prepared and confident.

Why Skin Cancer Screenings Matter

Living in Arizona means year-round sun exposure, which is one of the biggest risk factors for skin cancer. In fact, the Southwest has some of the highest rates of skin cancer in the country. Regular screenings with a board-certified dermatologist allow your doctor to detect suspicious spots before they become a serious problem. Early-stage skin cancers, including basal cell carcinoma, squamous cell carcinoma, and even melanoma, have excellent outcomes when treated promptly.

Step 1: Before Your Appointment

There's very little preparation required, but a few things will help your appointment go smoothly:

• Remove nail polish. Skin cancer can develop under fingernails and toenails, so leave them bare if possible.

• Skip the makeup. Your face and neck need to be visible, so come with a clean, bare face if you can.

• Wear easy-to-remove clothing. You'll likely change into a gown, so simple clothing makes the process quicker.

• Note any spots of concern. If you've noticed any moles, growths, or skin changes, make a mental note or write them down so you can point them out to your dermatologist.

Step 2: Check-In and Medical History

When you arrive, you'll check in and complete (or update) a brief medical history form. Your dermatologist will want to know about any personal or family history of skin cancer, your sun exposure habits, whether you use or have used tanning beds, and any medications you take. This context helps your provider assess your overall risk level and focus the exam appropriately.

Step 3: The Head-to-Toe Skin Exam

This is the core of the appointment. You'll be asked to undress and put on a medical gown. Your dermatologist, or a trained medical assistant, will then systematically examine your skin from head to toe. This includes your scalp, face, ears, neck, chest, back, arms, hands (including under the nails), legs, feet, and even the soles of your feet and spaces between your toes.

Don't be surprised if your provider uses a small handheld device called a dermatoscope. This magnifying tool with a built-in light allows the dermatologist to examine the surface and subsurface layers of a mole or lesion in much greater detail than the naked eye alone, dramatically improving accuracy in identifying suspicious spots.

The full exam typically takes 10 to 20 minutes. It is completely non-invasive and painless.

Step 4: What Your Dermatologist Is Looking For

Your dermatologist is trained to spot a wide range of skin concerns. For skin cancer specifically, they use the ABCDE guide to evaluate moles and lesions:

• A - Asymmetry: One half doesn't match the other.

• B - Border: Edges are irregular, ragged, or blurred.

• C - Color: Uneven shading or multiple colors within the same spot.

• D - Diameter: Larger than a pencil eraser (about 6mm), though skin cancers can be smaller.

• E - Evolving: Any spot that is changing in size, shape, color, or is new.

Beyond melanoma, your dermatologist will also look for signs of basal cell carcinoma (often a pearly bump or flat scar-like lesion), squamous cell carcinoma (a rough, scaly patch or firm red nodule), and actinic keratoses: precancerous rough patches caused by accumulated sun damage.

Step 5: If Something Looks Suspicious

If your dermatologist finds a spot that warrants a closer look, they may recommend a skin biopsy. This is a simple, in-office procedure where a small sample of skin tissue is removed and sent to a laboratory for analysis. A local anesthetic is applied first, so discomfort is minimal. Results typically come back within one to two weeks.

Finding a suspicious spot at a screening does not mean you have cancer, many biopsied lesions turn out to be benign. But if skin cancer is confirmed, catching it at an early, localized stage makes treatment far more straightforward. Our practice offers a full range of treatment options including Mohs surgery and Superficial Radiation Therapy (SRT), depending on the type, size, and location of the cancer.

Step 6: After Your Appointment

If everything looks clear, your dermatologist will let you know and recommend how frequently you should return for follow-up screenings. For most people with no significant risk factors, once a year is standard. Those with a personal or family history of skin cancer, a large number of moles, or a history of significant sun exposure may need to come in more often.

Your provider may also take photographs of any moles or lesions they want to monitor over time. This baseline documentation makes it easier to detect subtle changes at future visits.

How Often Should You Get Screened?

The American Academy of Dermatology recommends that everyone perform regular self-exams at home and schedule professional skin checks with a dermatologist at least once a year. If you notice any new or changing spots between appointments, a mole that bleeds, itches, or looks different from your other moles, don't wait for your next scheduled visit. Call us at (520) 382 - 3330 if you have any questions about self-exams or full body skin checks, or if you want to make an appointment with our team.

Ready to Schedule Your Skin Cancer Screening?

At Specialists in Dermatology, our dermatologists are experienced in detecting and treating all types of skin cancer. We serve patients throughout Tucson and Southern Arizona and treat more than one thousand skin cancer patients each year. A screening takes less than 30 minutes and could make all the difference.

Contact our office today to schedule your appointment. Your skin health is worth it. Happy Skin, Happy Life.