Which condition is characterized by greasy or waxy scalp scales mixed with sebum?

Seborrheic Dermatitis is a skin condition marked by the presence of greasy or waxy scales on the scalp, often accompanied by an excess of sebum. This condition predominantly affects areas of the skin that are rich in oil glands, such as the scalp, face, and upper torso. The combination of the greasy scales and sebum results from an inflammatory response and an overgrowth of certain yeast-like fungi on the skin.

In contrast, conditions such as furuncles are localized infections that do not typically involve waxy scales, while tinea capitis, a fungal infection, presents with distinct patches of hair loss and may have different scaling characteristics. Scabies, caused by mites, leads to intense itching and a rash, but lacks the specific greasy scaling associated with seborrheic dermatitis. Understanding these distinctions helps clarify why seborrheic dermatitis is the correct condition in this scenario.