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Concerning Spots, Lesions, & Moles

Care for Concerning Spots

At Vanguard Skin Specialists, we combine expert clinical assessment with on-site dermatopathology and a commitment to rapid follow-up. You can feel confident your skin is truly cared for when you have a concerning spot or mole.

Spots and moles are common. For most people, they’re harmless. However, sometimes, it’s necessary to see a dermatologist.

A close-up of a doctor examining a mole on a person's shoulder, with the doctor's hands gently touching the skin around the mole and checking for any unusual lesions. The background is blurred.

What kinds of spots are concerning?

Many skin spots are harmless, but some changes can signal a higher risk of skin cancer. Knowing what to look for can help you decide when it’s time to have a spot checked by a professional.

The ABCDEs of Melanoma

The ABCDEs are a simple, widely utilized guide that dermatologists use to identify warning signs of melanoma, the most serious type of skin cancer. A spot does not need to meet every criterion to be concerning—any one of these changes is worth evaluating.

Asymmetry

One half of the mole does not match the other in shape or color.


Border

The edges are irregular, blurred, or uneven rather than smooth.


Color

It contains multiple shades of brown, black, red, white, or blue.


Diameter

The spot is larger than 6 millimeters or about the size of a pencil eraser.


Evolving

It changes over time in shape, size, texture, or color, or it begins itching or bleeding and doesn’t heal.

Types of Concerning Spots

A person with multiple moles and spots on their back being examined by someone wearing white medical gloves, focusing on skin health or a dermatology check-up.

Atypical or Dysplastic Moles

Moles that look different from usual ones in shape, size, or color may require closer observation or removal.

A healthcare professional wearing a blue glove examines moles on a patient’s back with a dermatoscope. The patient, dressed in a white medical gown, is carefully checked for unusual spots or lesions.

Precancerous Lesions

Growths such as actinic keratoses (rough, scaly patches caused by sun exposure) that can progress to skin cancer if untreated.

A person with brown hair in a bun has a large mole on their neck. A gloved hand, likely a doctor's, is examining the spot. The person is wearing a white tank top.

Other Concerning Growths

Spots that persist, bleed, change, or don’t heal may warrant professional evaluation.

Treatment Options for Concerning Spots

Treatment depends on the type of lesion and your individual needs.

  • Benign lesions often require no treatment and may simply be monitored over time.
  • Precancerous spots can frequently be treated with non-surgical options to prevent progression.
  • Skin cancers may be treated with a range of approaches, including surgical excision, Mohs surgery, topical medications, radiation therapy, systemic treatments, or other non-surgical therapies, depending on the type and stage of cancer.
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The WOW Promise—Within One Week

When it comes to skin cancer, time matters. At Vanguard Skin Specialists, we believe no patient with a potentially concerning spot should wait long for answers. That’s why we created the WOW PromiseWithin One Week.

If you have a mole, lesion, or spot that looks suspicious or is causing concern, our team will ensure you are seen by one of our dermatology providers Within One Week of contacting us. This commitment reflects our mission to provide exceptional, compassionate care when you need it most.

What to Expect During Your Visit

Your medical provider will begin by carefully examining the spot that concerns you. They may also recommend a total body skin exam (TBSE) to check for other areas of concern.

If needed, your provider may perform a biopsy to better understand what’s happening. A biopsy involves removing a small sample of tissue under local anesthesia, which is then evaluated under a microscope by our in-house dermatopathology lab.

Once the results are available—typically within 1–2 weeks—your provider will review the findings with you and discuss any recommended next steps.

A man and a woman in navy blue medical scrubs stand smiling in front of a wall with the

Dermatologist-Approved Sun Safety Tips

Sun protection is one of the most effective ways to reduce your risk of skin cancer and prevent premature skin aging. These dermatologist-approved tips can help you protect your skin year-round, whether you’re spending time outdoors, enjoying Colorado’s high-altitude sunshine, or simply going about your daily routine.