What is NOT a common symptom of seborrheic dermatitis?

The reasoning behind identifying persistent acne as not a common symptom of seborrheic dermatitis lies in the nature of the condition. Seborrheic dermatitis is primarily characterized by red, flaky, and oily patches on the skin, often appearing on the scalp, face, or areas with a high concentration of sebaceous glands. Common symptoms include crusting, itchiness, and scaling, which may vary in degree from dry to oily.

Persistent acne, on the other hand, is a distinct dermatological condition primarily associated with clogged pores, hormonal factors, and bacteria, rather than the inflammatory response and sebaceous secretion imbalance characteristic of seborrheic dermatitis. Therefore, while seborrheic dermatitis may co-exist with acne in some individuals, persistent acne itself is not considered a hallmark symptom of seborrheic dermatitis. This differentiation helps clarify the underlying skin processes linked to each condition.