Which disorder is caused by an unusual discharge by the oil glands?

Seborrhea is a skin disorder characterized by an abnormal discharge by the oil glands, specifically an overproduction of sebum. This condition is marked by greasy, scaly patches on the scalp and can also affect other areas of the body where sebaceous glands are abundant, such as the face and upper back. The excessive sebum can lead to the characteristic oily appearance of the skin, along with potential itching and flaking.

Understanding the role of sebaceous glands and sebum production is crucial in recognizing seborrhea as a distinct condition compared to other skin disorders, which may not primarily stem from oil gland activity. For instance, while acne is also linked to oil product, it involves the clogging of hair follicles and bacterial involvement. Eczema and psoriasis are inflammatory skin conditions that stem from different underlying factors rather than an unusual discharge of oil glands. Thus, seborrhea specifically highlights the relationship between oil gland dysfunction and its impact on skin health.