What is Sebaceous Hyperplasia?
Sebaceous Hyperplasia is a very common benign skin condition. They look like a small donut-shaped bump on the skin. These lesions show up mostly on the forehead, cheeks and nose and appear as whitish-yellow or skin-colored papules that are soft and vary in size from 2-9 mm.
Cause of Sebaceous Hyperplasia
At puberty, sebaceous glands enlarge and become increasingly active due to increased production of androgens, and they reach their maximum by the third decade of life. As androgen levels decrease with advancing age, the sebocyte (the cells that make up the oil glands, and secrete sebum) turnover begins to slow down. This decrease in cellular turnover results in crowding of primitive sebocytes within the sebaceous gland, causing a benign enlargement of the sebaceous gland, or sebaceous hyperplasia. This is particularly apparent in the areas where sebaceous glands are concentrated, such as the face. It is thought to be caused by a decrease in the circulating levels of androgen associated with aging.