Many women have vulvar itching that worsens at night. The itching often occurs around the labia majora and minora and the clitoral area, which interferes with sleep. The itching is worse at night because patients with vulvar itching begin to have localized skin breakouts or scratch marks due to involuntary scratching after going to sleep, making the vulvar skin red and swollen and infected. Women who sit in the office for a long time do not move around often and are prone to vulvar itching. Sitting in a chair during the day is not breathable, sweating, and at night bacteria begin to grow, easily aggravating the itching. Sleeping at night wearing a non-breathable panties, not absorb sweat, little activity, can not ventilate, dry, night easily lead to itching, the above situation is best to wear loose underwear, nothing often walk around. There are also a lot of inflammation caused by vulvar itching, the activity is enhanced at night, such as mold, trichomonas, etc., are easy to be active at night. Therefore, women’s vulvar itching is especially likely to worsen at night.