It can also be caused by too much of a certain kind of bacteria on the skin. Actinic keratosis is caused by exposure to sunlight. It appears as thick, scaly crusts on the skin. It is most common in ...

Keratosis pilaris is a common bumpy skin rash (sometimes called "chicken skin") that most often appears on the upper arms, cheeks, thighs, and buttocks. It is not contagious. Rather, it occurs when ...

Keratosis pilaris on black skin may not appear as red or pink bumps. In some people, the bumps may be discolored. In others, they appear like your natural skin color but raised, like goosebumps ...

Cutaneous squamous cell carcinoma (cSCC) is the second most common non-melanoma skin cancer, among which 82% arise from actinic keratosis (AK) characterized by lesions of epidermal keratinocyte ...

Cutaneous squamous cell carcinoma (cSCC) is the second most frequent of the keratinocyte-derived malignancies with actinic keratosis (AK) as a precancerous lesion. To comprehensively delineate the ...