糜烂:皮肤或粘膜上皮细胞坏死、脱落,造成表浅的上皮缺损,其缺损深度局限在表皮层以内未超过表皮者称为糜烂,如口腔糜烂、宫颈糜烂等。溃疡:皮肤或粘膜组织坏死、脱落所形成的局限性缺损深度超过表皮者称为溃疡,如口腔溃疡、胃和十二指肠溃疡、皮肤溃疡等。在识別溃疡时,可以看到以下情况: 形态:圆形、椭圆形、不规则或匐行; Erosion: skin or mucosal epithelial cells necrosis, loss, resulting in superficial epithelial defects, the depth of the defect within the epidermis is not beyond the epidermis known as erosion, such as oral erosion, cervical erosion and so on. Ulcers: skin or mucosal tissue necrosis, loss of the limitations of the formation of defects beyond the depths of the skin known as ulcers, such as mouth ulcers, stomach and duodenal ulcers, skin ulcers and so on. In the identification of ulcers, you can see the following: Morphology: round, oval, irregular or crenated;