Keratosis is a skin disease characterized by layers of horny growths on the skin. There are different types of keratosis, according to the National Skin Care Institute.
Actinic keratosis, sometimes called solar or senile keratosis, appears as a rough wart-like spot. It is usually red with a white scale on top. This type of keratosis is a precancerous condition, in which the scaly patches of skin can evolve into skin cancer, states the National Skin Care Institute. The process can take decades and happens in only a few cases. Actinic keratosis affects areas of the skin regularly exposed to sun, such as the face, upper chest and back of the neck. Topical treatments for actinic keratosis work by destroying the layer of damaged skin cells and smoothing out the skin.
Keratosis pilaris is a genetic follicular ailment caused by an overwhelming accumulation of keratin around hair follicles. It appears as rough bumps on the skin, sometimes mimicking goose bumps. Keratosis pilaris has three different subtypes, explains the National Skin Care Institute. Keratosis pilaris rubra shows up in red, swollen bumps. Keratosis pilaris alba appears as rough bumpy skin, and keratosis pilaris rubra faceii comes up as a red rash on the cheeks.