The 10 Signs of Skin Cancer You Need to Watch Out For to Avoid

Introduction

Your skin is your body’s first line of defense—and sometimes, it’s the first to signal that something is wrong.
Skin cancer ranks among the most widespread cancers worldwide, but the good news is that it’s highly treatable when detected early.

According to Dr Shaun Segal, a celebrity dermatologist specializing in skin and cancer detection, early warning signs can mean the difference between life and death. Unfortunately, these symptoms often start subtly and are easily ignored.

Here are the 10 early warning signs of skin cancer that you should never overlook.

1. A New or Changing Mole

Most moles are harmless. However, a mole that changes in size, color, or shape could be a warning sign.

Dr Shaun Segal recommends following the ABCDE rule for evaluating moles:

• A – Asymmetry: One half of the mole doesn’t match the other.
  
  
• B – Border: Irregular or blurred edges.
  
  
• C – Color: Varying shades of brown, black, or red.
  
  
• D – Diameter: Larger than 6mm (about a pencil eraser).
  
  
• E – Evolving: Changes in shape, color, or elevation.
  
  

If a mole looks different from others or starts to change, get it checked by a dermatologist immediately.

2. A Sore That Doesn’t Heal

A non-healing sore lasting more than a few weeks may signal basal cell carcinoma, the most common form of skin cancer.
It may appear scabby, bleeding, or shiny pink.

Dr Shaun Segal cautions that repeatedly healing and reopening sores are particularly concerning.
Early detection helps prevent deeper tissue damage and more complicated treatment.

3. Persistent Itching or Tenderness

Chronic itching or pain in a specific spot—especially around a mole or patch—can be an early warning sign.

Dr Shaun Segal reminds patients that pain isn’t always a late symptom. Even mild discomfort or constant itching can indicate underlying skin cell changes.

If irritation doesn’t go away with creams or rest, it’s time to consult a dermatologist.

4. A Shiny or Pearly Bump

A smooth, shiny, or translucent bump that is pink, white, or clear may indicate basal cell carcinoma.

Although it might seem harmless at first, it tends to grow slowly over time.
Dr Shaun Segal advises taking monthly photos of such bumps—if you notice enlargement or texture changes, seek medical evaluation.

5. A Rough, Scaly Patch

Sometimes, skin cancer appears as a dry, scaly, or crusty patch resembling a rash or eczema.
This often signals squamous cell carcinoma (SCC), which can spread if left untreated.

If the patch doesn’t respond to moisturizers or medicated creams, book a dermatology exam.
As Dr Shaun Segal emphasizes, persistence is key—anything lasting beyond a few weeks deserves attention.

6. Dark Streaks Under Fingernails or Toenails

Skin cancer can also appear beneath your nails.
A dark stripe or streak that doesn’t fade may be a sign of subungual melanoma, a rare but dangerous type of skin cancer.

Unlike bruises, these streaks don’t move or grow out with the nail.
Dr Shaun Segal advises taking such marks seriously—especially if they appear suddenly.

7. A Mole That Stands Out

If one mole looks noticeably different from others, it’s known as the “ugly duckling” sign.

Dr Shaun Segal notes that melanoma often stands out—it may be darker, larger, or oddly shaped compared to nearby moles.
Trust your instincts: if something doesn’t look right, have it examined.

8. Redness or Swelling Around a Mole

Redness, puffiness, or inflammation around a mole can indicate underlying cancer activity.

Dr Shaun Segal explains that this is often mistaken for irritation, but persistent redness beyond the mole’s border—especially if it lasts several weeks—requires professional evaluation.

9. Pigment Spreading Beyond a Mole

If the color of a mole starts spreading into the surrounding skin, it may signal melanoma cells expanding outward.

According to Dr Shaun Segal, this is one of the earliest visible signs of skin cancer and should never be ignored.
Prompt diagnosis and surgical removal can lead to full recovery.

10. Skin Changes in Hidden Areas

Skin cancer doesn’t just appear on sun-exposed areas.
It can develop in unexpected places—between the toes, on the scalp, under the nails, inside the mouth, or even under the breasts.

Dr Shaun Segal advises performing a full-body skin check using a mirror or asking a partner for help to inspect hard-to-see areas.

Even areas like the bottom of the feet or behind the ears can develop skin cancer, especially in people with darker skin tones.

When to See a Dermatologist

If any skin change lasts beyond a few weeks, book an appointment immediately.

Dr Shaun Segal explains that dermatologists use advanced tools like dermatoscopes for painless and precise evaluation.
Early diagnosis often means non-invasive treatment and better long-term outcomes.

Prevention and Awareness

While recognizing warning signs is crucial, prevention is your best protection.
Dr Shaun Segal recommends these simple but powerful steps:

• Apply broad-spectrum sunscreen (SPF 30+) daily on all exposed skin.
  
  
• Avoid tanning beds and minimize direct sun exposure.
  
  
• Wear wide-brimmed hats and UV-protective clothing outdoors.
  
  
• Perform monthly self-exams for new or changing spots.
  
  

Small actions like these can significantly lower your risk of developing skin cancer.

Final Thoughts

Skin cancer doesn’t have to be deadly—knowledge and vigilance are your strongest defenses.

Dr Shaun Segal reminds everyone:

“Early detection saves lives. Never ignore what your skin is trying to tell you.”

Whether it’s a mole that changes color, a sore that won’t heal, or a spot that just feels off, listen to your skin.
Regular self-examinations and dermatologist visits not only ensure early treatment but also promote peace of mind and long-term wellness.

Defend your skin today — protect it for life.