Onset of AD in infant with red scaly scalp.

Early redness, fine scale and dryness to cheeks in baby with AD.

Red, oozing and crusting cheeks of infant with AD.

Scratching frenzy in toddler with AD.

Shiny hyperpigmented, lichenified skin in antecubital fossa of preteen girl.

Vesicles and redness of fingers and palm of preteen with AD.

Mild redness and scale of skin except area protected by diaper in AD.

Hypopigmented scaly areas in AD (pityriasis alba).

Fissures in skin permit bacterial invasion in AD.

Staphylococcal furuncle on finger in child with AD.

Vesicles and erosions of HSV infecting AD (eczema herpeticum).

Fingertip unit. Amount of ointment or cream from distal finger crease to tip.