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Skin Cancer Alert! Recognizing the Red Flags.

Updated: Nov 28, 2023

Skin cancer is one of the most common forms of cancer worldwide, and its prevalence continues to rise. However, the good news is that early detection can make a significant difference in treatment outcomes. In most cases, a relatively simple surgery with no adjuvant treatment is curative. To protect yourself and your loved ones, it's essential to be aware of the red flags that may indicate the presence of skin cancer. In this article, we'll discuss some key warning signs to watch out for.

1. Unusual Moles (the "ABCDE")

Moles are a common part of our skin landscape, but certain changes in moles can be a red flag. Keep an eye out for moles that exhibit the following characteristics:

  • Asymmetry: If one half of the mole doesn't match the other half.

  • Border irregularity: Moles with jagged, blurred, or poorly defined edges.

  • Color heterogeneity: Moles that have varying shades of brown, black, red, white, or blue.

  • Diameter: Moles larger than the size of a pencil eraser (approximately 6 mm).

  • Evolution: Moles that change in size, shape, color, or elevation over time.

2. Ulcers or sores that do not heal

Skin cancers often manifest as non-healing sores or lesions that don't seem to improve or go away. Pay attention to any open sores or growths that refuse to heal, or if they return in the same area after healing. In general, anything that does not heal up in 2 weeks despite proper care should be checked.

3. New Spots or Growth

The appearance of new spots, growths, or lumps on your skin, especially if they grow rapidly or look unusual, is a potential red flag for skin cancer. While not all new growths are cancerous, it's essential to have them evaluated by a dermatologist.

4. Changes in Texture

Skin cancer can cause changes in the texture of your skin. Look out for areas that become rough, scaly, or crusty. Skin that feels tender or painful can also be a sign.

5. Bleeding or Oozing

Any mole or spot that bleeds, oozes, or becomes ulcerated should be investigated promptly. While minor injuries can cause temporary bleeding, persistent or recurrent bleeding is a concerning sign.

6. Personal or Family History of Skin Cancer

Okay, not exactly a red flag but a personal or family history of skin cancer can increase your risk of developing the disease. These patients are recommend to be extra vigilant and have regular skin check-ups.


Skin cancer can affect anyone, regardless of age or skin type. The key to successful treatment lies in early detection. By keeping an eye out for these red flags and promptly seeking medical evaluation, you can significantly improve your chances of catching skin cancer in its early, more treatable stages. Regular skin self-exams and annual mole checks are invaluable in early detection of skin cancer, especially in high risk individuals. Your skin is a precious asset, and taking care of it is an essential part of overall well-being.


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