外阴白斑的症状和病因有哪些?What are the symptoms and etiology of the outer Yin white spot?

陈凤林教授指出：外阴白斑病因如下：Professor Chenfenglin pointed out that the cause of the outer yin white spot is as follows:

外阴白斑的病因不清，多为外阴癌前病变，故应积极早期治疗。

The cause of the outer yin white spot is unclear, and it is mostly a precancerous lesion of the vulva. Therefore, it should be actively treated early.

外阴白斑症状如下：

The symptoms of pubic white spots are as follows:

表现为外阴局部色素减退，发白，瘙痒，灼痛，皮肤干燥肥厚开裂，甚至萎缩溃烂，严重影响生活质量。白斑先发于小阴唇内外及阴蒂，继而蔓延的大阴唇内侧。白斑面积可位于整个外阴、会阴区及肛门周围。

The manifestation is vulva partial pigmentation, white, itching, burning pain, dry and hypertrophy cracking, and even atrophy and ulceration, seriously affecting the quality of life. The white spot starts inside and outside the labia minora and the clitoris, and then spreads inside the labia Majora. The white spot area can be located around the entire vulva, perineal area and anus.