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口腔白斑是发生在口腔粘膜上的白色斑状损害,系口腔粘膜上皮细胞过度角化所致,所以称为口腔粘膜白斑。这种病以50～60岁为发病高峰,多发生于男性。白斑在口腔各部如唇、舌、腭等均可发生,常以两颊、舌尖、舌缘为多见。白斑初期呈浅白色、灰白色、乳白色或深浅不均的白色斑块,不突出粘膜面,随着病情的发展,有的略高出粘膜面,有的明显高出粘膜面。表面粗糙有裂纹,界限清楚,白斑也可发生破裂、溃疡或糜烂。
Oral leukoplakia occurs in the white mucosa of the oral mucosa damage, Department of oral mucosal epithelial cells caused by over-keratosis, so called oral leukoplakia. The disease incidence of 50 to 60-year-old peak, occurred in men. White spots in various parts of the mouth, such as lips, tongue, palate, etc. can occur, often with cheeks, tongue, tongue edge is more common. White spots initially pale white, gray, white or uneven white patches, do not highlight the mucosal surface, with the progression of the disease, and some slightly higher than the mucosal surface, and some were significantly higher than the mucosal surface. Rough surface cracks, clear boundaries, white spots can also occur rupture, ulcers or erosion.