Category: Diagnostic Reference Sheets

General Information Actinic Keratosis (AK) or Solar Keratosis is characterized by dysplasia and architectural disorder of the epidermis. Keratinocytes of the basal layer are abnormal, demonstrating variable sizes and shapes. Cellular polarity is altered, and nuclear atypia is seen. These alterations may extend upward to the granular layer, which may be thinned. Overall, the epidermis […]

General Information Actinic Cheilosis (actinic cheilitis) is a diffuse, degenerative, irreversible alteration of the vermilion border of the lower lip. Occurring primarily in men Actinic Cheilitis does not appear until later on in life. The cause is often extreme sun exposure during young adult life. The lip becomes puffy, blotchy red and pale pink, with […]

General Information Acne Vulgaris is also known as common acne, pimples, spots, or zits. This common skin disease affects 85% – 100% of people at some point of their lives. Acne Vulgaris can lead to physical pain and scarring as well as psycho- social suffering. Comedones, papules, pustules, and nodules in a sebaceous distribution characterize […]