Background. Erosive pustular dermatosis is a distinctive clinical entity that has been described on either the scalp or legs. Chronic, shallow erosions covered by yellow crusts develop in atrophic or fibrotic skin. The scalp is the most commonly encountered localization, whereas erosive pustular dermatosis of the leg has also been reported in several cases. The histopathologic picture is nonspecific, and the disease is usually considered as a diagnosis of exclusion.