Patient: Hello expert: My daughter is 6 weeks old and her lower side is always red and smells. I used lotion to wash it without much effect. The gynecological and dermatological examinations at the hospital said that there was nothing wrong. In the winter she had a high fever and was hooked up to a few drips, got over the cold and her bottom was no longer red or smelly, but it didn’t take too long and now it’s like this. I would like to ask what should I do? The main reasons for vulvodynia are the following, you can check yourself: 1. dry stools. 2, urinary tract infection. 3, excessive washing of the vulva, especially many parents like to often use vulva disinfectant. 4, pinworms, half an hour after the child falls asleep at night to check the anal opening, if you find a small wired-like worms, the diagnosis can be established.