Which of the following best describes a characteristic of seborrheic dermatitis?

A characteristic of seborrheic dermatitis is that it often causes redness and flaking. This skin condition primarily affects areas where sebaceous (oil) glands are most active, such as the scalp, face, and upper back. The redness typically arises due to inflammation, while flaking occurs as the skin's outer layer becomes irritated and sheds more frequently than normal.

Seborrheic dermatitis can present with yellowish or white scales and is often mistaken for other skin conditions like dandruff or eczema. While it can be uncomfortable and may require treatment to manage symptoms, it is generally not associated with permanent damage or scarring, nor is it considered life-threatening. This makes the identification of redness and flaking as key characteristics of this condition particularly accurate.