Milady Cosmetology Practice Exam

What is the primary characteristic of seborrheic dermatitis?

1. Excessive oiliness

2. Inflammation of the skin

3. Red, flaky patches

4. Formation of blisters

The correct answer is: Inflammation of the skin

Seborrheic dermatitis is primarily characterized by inflammation of the skin. This inflammatory condition often presents in areas of the body where sebaceous (oil) glands are more active, such as the scalp, face, and upper body. The inflammation leads to redness, swelling, and irritation, which are hallmark signs of this condition. While excessive oiliness can be associated with seborrheic dermatitis, it is not the defining characteristic. The presence of red, flaky patches is a common symptom resulting from the combination of inflammation and excessive oil production, but the underlying cause is the inflammation itself. The formation of blisters is not typical of seborrheic dermatitis. Instead, the skin tends to exhibit scaling rather than blistering, making the inflammatory response the most crucial defining characteristic of the condition.