Final answer:
The common term for seborrheic dermatitis in infants is cradle cap, which presents as scaly, crusty patches on a baby's scalp, differing from eczema and psoriasis.
Step-by-step explanation:
The common term for seborrheic dermatitis in infants is cradle cap. This condition is characterized by scaly, crusty patches on the scalp and is quite common in babies. It is not painful or itchy and usually clears up on its own without medical treatment. It is different from conditions such as eczema, which is a more general inflammatory skin disorder that can occur at any age and is known for causing red, flaky rashes.
On the other hand, psoriasis is a chronic skin condition that speeds up the life cycle of skin cells, causing cells to build up rapidly on the surface of the skin.
The correct answer to the student's question is c) Cradle cap.