What is a distinguishing characteristic of seborrheic keratosis?

Seborrheic keratosis is characterized by a "stuck-on" appearance, which refers to its raised, wart-like appearance that seems to be attached to the skin's surface. These growths are typically well-defined and can vary in color, but they often appear as tan, brown, or black lesions. The appearance gives the impression that they are stuck onto the skin without any blending into the surrounding tissue, which is a key distinguishing feature.

In contrast, other choices like bright red color or painful sensation do not accurately describe seborrheic keratosis. These lesions are generally asymptomatic, meaning they do not cause pain or discomfort. Additionally, fluid-filled blisters are characteristic of other skin conditions, such as herpes or contact dermatitis, rather than seborrheic keratosis. Hence, the "stuck-on" appearance remains the hallmark feature of this benign skin growth.