What does seborrhea primarily refer to?

Seborrhea primarily refers to an excess production of oil by the sebaceous glands in the skin. This condition is characterized by greasy, oily skin or scalp, which can lead to various skin issues such as dandruff, oily skin, and acne. The term "seborrhea" comes from "sebum," the oil produced by these glands, and "rrhea," meaning flow or discharge. It's essential for estheticians to understand this condition as it influences various treatments and product recommendations for clients with oily skin.

In contrast, the other options focus on conditions that are not characterized by excessive oil production. For instance, dryness of the skin refers to a lack of moisture and can contribute to different skin problems, while flakiness can occur due to various reasons, including dry skin or conditions like eczema. Skin sensitivity pertains to how easily skin reacts to irritants or allergens, which is distinct from the oiliness described by seborrhea. Understanding these distinctions helps in selecting appropriate treatments and products for clients based on their skin type and concerns.