CHAPTER 2 LESION DESCRIPTION/TERMINOLOGY 25
Fig. 2.22.Erosion – defect in the skin that does not penetrate the dermal-epidermal junction. The upper
layers of the epidermis have peeled away from lower layers in this case of epidermolysis bullosa acquisita.
Fig. 2.23.Ulcer – defect in the skin that penetrates the dermal-epidermal junction.