Keloids: Are Your Skin Growths Melanomas or Keloids? - Dermatology

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Keloids, or "蟹足腫" in Mandarin, are a type of raised scar that occurs when the body produces too much collagen during the healing process. They can appear as thick, rubbery lesions that extend beyond the original wound site. Your description of having a black, raised growth on your back that resembles your existing keloids raises some important considerations.

Firstly, it’s crucial to differentiate between keloids and other types of skin growths, including benign lesions and potentially malignant ones like melanomas. Keloids typically have a smooth surface and can vary in color from pink to dark brown, depending on your skin tone. They are usually asymptomatic, although they can sometimes itch or cause discomfort. The fact that your new growth is dark brown to black and has a similar texture to your keloids suggests it may also be a keloid, especially if it developed after a skin injury, such as the pimple you mentioned.

However, the color change and the specific characteristics of the growth warrant further investigation. Melanomas, a type of skin cancer, can also present as dark, raised lesions. Key features to look for in distinguishing a melanoma from a keloid include asymmetry, irregular borders, multiple colors, and a diameter larger than 6mm. If your growth exhibits any of these characteristics, it is essential to seek medical advice promptly.

Given your history of keloids, it is possible that the new growth is indeed another keloid, especially if it developed in response to trauma or irritation. Keloids can sometimes form in areas of previous skin damage, and they may vary in color and texture. However, the fact that it is darker than your other keloids could indicate a different type of skin lesion, particularly if it was not associated with a known injury.

I recommend that you consult a dermatologist for a thorough evaluation. They may perform a physical examination and, if necessary, a biopsy to determine the exact nature of the growth. This is crucial not only for diagnosis but also for determining the appropriate treatment. Treatments for keloids can include corticosteroid injections, silicone gel sheets, laser therapy, or surgical removal, depending on the size, location, and symptoms associated with the keloid.

In summary, while your new growth may be another keloid, the differences in color and the fact that it developed after a pimple necessitate a professional evaluation to rule out other possibilities, including melanoma. Early diagnosis and treatment are key to managing skin growths effectively, so please do not hesitate to seek medical attention.