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Aplasia cutis presents with an area of scalp defect at birth (A), sucking blister (B) presents as an oval blister on the patient’s hand, which is a result of normal sucking behavior in utero, and nevus sebaceous (C) manifests with an area of hair loss plaque on the scalp at birth. The lesion characteristically has a velvety orange-yellow plaque resulting from hormonal influences from the mother.
