2. What Seborrheic Keratosis Is and Why It Looks So ‘Stuck On’
Seborrheic keratosis is a non-cancerous skin growth that typically appears in adulthood. Its hallmark feature is its ‘stuck-on’ appearance, often resembling a drop of wax on the skin. These growths are composed of keratinocytes, which are the predominant cells in the epidermis.
The waxy appearance is due to the accumulation of keratin on the skin’s surface. While they can appear anywhere on the body, they are most common on the face, chest, shoulders, and back. Seborrheic keratoses can range in color from light tan to dark brown or black, and they are usually elevated above the skin surface.
3. Classic Signs: Color, Texture, and Shape of Seborrheic Keratoses
Seborrheic keratoses are known for their distinctive appearance: they are often round or oval and have a well-defined border. Their texture can be smooth or slightly rough, and they often appear scaly or wart-like.
Color can vary significantly, with some lesions appearing yellowish, while others are a deep brown or black. Despite this variation, the consistency of their waxy, ‘pasted-on’ look is a key identifier, distinguishing them from other skin conditions. Keeping an eye on these attributes can help differentiate them from more concerning lesions.
4. How Seborrheic Keratosis Differs From Skin Cancer
While seborrheic keratoses are benign, they can sometimes mimic the appearance of melanoma or other skin cancers. The primary difference lies in their growth pattern and texture. Skin cancers often change in size, color, and shape more rapidly than benign growths.
Melanomas, for instance, might exhibit asymmetry, irregular borders, and multiple colors, including shades of red or blue. Seborrheic keratoses, conversely, maintain a consistent appearance over time, though any change in characteristics should still be evaluated by a healthcare professional to rule out malignancy.
Read more on the next page…
