Varicella-zoster virus infection: herpes zoster in T8 to T10 dermatomes. Typical grouped vesicles and pustules with erythema and edema of three contiguous thoracic dermatomes on the posterior chest wall.
Strawberry hemangiomas (also called strawberry mark, nevus vascularis, capillary hemangioma, hemangioma simplex) may appear anywhere on the body, but are most common on the face, scalp, back, or chest.
Transient neonatal pustular melanosis. This is a benign neonatal dermatosis that is most common among African- American infants. The original lesion is a vesiculopustule, which may be present at birth. This small blister quickly ruptures and leaves a typical collarette of superficial scale processes. Tzanck smear of a pustule of erythema toxicum neonatorum will reveal numerous eosinophils but no multinucleated giant cells or bacteria. Occasionally, peripheral eosinophilia is also present. The cause of this condition is not known, and it resolves spontaneously within 10 days. No treatment is required.
Xerosis. The accentuation of skin markings and fine scale illustrated here are typical of xerosis. The tendency toward dry skin tends to be inherited and is more common in families with a history of atopy. Low humidity, usually related to dry heat during the winter months, is an aggravating factor. Treatment of xerosis is aimed at rehydrating the stratum corneum. Emollients containing urea or alpha-hydroxy acids are particularly effective. Excessive bathing and the use of alkaline soaps must be avoided.