Which skin condition is characterized by excessive oil production?

Seborrheic dermatitis is specifically characterized by excessive oil production on the skin, leading to flaky, often greasy scales and irritation. This condition typically occurs in areas rich in sebaceous (oil) glands, such as the scalp, face, and upper back. The overproduction of sebum, which is the natural oil produced by the skin, can contribute to the inflammation and noticeable scales associated with this condition.

In contrast, alopecia areata is primarily an autoimmune condition that leads to hair loss but does not involve excessive oil production. Acne, while also associated with oil production, is more precisely characterized by clogged pores and the presence of pimples due to factors like bacteria and dead skin cells, rather than solely excessive oil. Eczema refers to a group of inflammatory skin diseases that often result in dry, itchy skin and can be triggered by various environmental factors, but it is not directly related to oil production. Therefore, seborrheic dermatitis stands out as the condition that is directly linked to excessive oil.