A person with keratosis has?

A person with keratosis does indeed have a rough patch of skin. Keratosis refers to a condition where there is a buildup of keratin, which is a protein found in the skin, hair, and nails. This buildup can result in thickened, scaly, and often rough patches on the skin's surface. These areas are commonly seen in various types of keratoses, such as actinic keratosis or seborrheic keratosis.

In contrast, the other options describe skin conditions that do not align with keratosis. A smooth and shiny surface is characteristic of healthy skin or certain skin treatments, while an oily texture often corresponds to conditions like acne rather than keratosis. A light-colored spot may refer to conditions like lentigines or vitiligo, which are distinct from keratosis.