What appearance is classical for a seborrheic keratosis?

Seborrheic keratosis typically presents with a distinctive appearance that is often described as having a "stuck-on" quality. These lesions are generally raised and vary in color from light tan to black. They have a rough, warty texture, which contributes to their elevated nature. The "stuck-on" appearance is a hallmark feature that distinguishes seborrheic keratosis from other skin lesions.

The lesions are benign and can vary in size, often appearing as plaques with well-defined borders. While they may sometimes have a scaly component, the key identifying characteristic is their elevated and textured surface. This presentation is what clinicians look for when diagnosing seborrheic keratosis, differentiating it from other dermatological conditions that may have overlapping features.