Seborrheic dermatitis (SD) of the face is often pruritic, but only mildly so. Itching of the scalp, however, is a common symptom. There is erythema and fine, bran-like scaling on the forehead, nasolabial folds, around the ears, and on the eyebrows or eyelids (Fig. 12-1). The scalp is often involved—common dandruff—as are presternal and intertriginous areas, such as the vault of the axilla and the groin. Seborrheic blepharitis is SD of the eyelids and margins. The condition can be florid in patients with acquired immunodeficiency syndrome (AIDS).