Sebaceous filaments are structures that allow sebum to flow to the surface of the skin. Tiny glands beneath the skin create sebum, which is an oily substance that helps lubricate the skin. When the ...

Black dots on the nose are one of the most stubborn and misunderstood skin concerns. Often mistaken for trapped dirt, these marks are usually blackheads or sebaceous filaments—normal structures that ...

This patient had sebaceous hyperplasia, a benign proliferation of the sebaceous gland that occurs in a periorbital location on patients of middle age or older. The condition is characterized by small, ...