What is a comedo commonly associated with?

A comedo is commonly associated with acne vulgaris, which is a skin condition that occurs when hair follicles become clogged with oil and dead skin cells. The term "comedo" specifically refers to the clogged hair follicles that can either be open (open comedo, or blackhead) or closed (closed comedo, or whitehead). This association with acne vulgaris is significant as it highlights the pathophysiology of acne, where the presence of comedones is a primary feature of the disorder, showing how they can lead to inflammation and the formation of more severe acne lesions. Understanding this connection is essential for those working in medical coding as it pertains to accurately diagnosing and coding conditions related to dermatology.