Seborrheic Keratosis
Seborrheic keratosis (SK) is a common, benign (not associated with cancer) skin lesion commonly found on the face or trunk. It is rough, scaly, and often "greasy and stuck on" in its clinical appearance. Its color can range from flesh colored, tan, and/or brown, to very dark brown or almost black. However, SKs can become red, itchy and scaly, mimicking a skin cancer and sometimes needing a biopsy. Treatment is usually cosmetic unless the lesion is inflamed or irritated by rubbing on clothing. Keratoses can be treated with liquid nitrogen freezing, electrosurgery, or cut off the skin. SKs can sometimes recur after they have been removed, and people who are prone to this condition usually develop more over time.
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