About the expression of vulva Sao urticant disease: Become aware from subjective feeling for, sao itchs can be durative, also can be clonic, often night is aggravating.

• 有关外阴瘙痒症的表现：从主观感觉来说，瘙痒可以是持续性的，也可以是阵发性的，常常夜晚加重。