婴幼儿的卵巢功能尚不健全,阴道粘膜菲薄,无皱襞,细胞内缺乏糖原,阴道酸度低,因而抗感染力弱,易受感染,临床上婴幼儿外阴炎常与阴道炎并存。婴幼儿外阴阴道炎的致病原体最常见的是大肠杆菌,约占病例中的80%,其次有葡萄球菌、溶血性链球菌,变形杆菌等。这类细菌所致的外阴阴道炎,可以表现为急性炎症,但往往长期存在而成为慢性炎症且经久不愈,甚至甚至引起小阴唇粘连。 Ovarian function of infants and young children is not perfect, the vaginal mucosa meager, no folds, lack of glycogen within cells, vaginal acidity is low, so anti-infective weak, susceptible to infection, clinically infantile vulvitis often co-exist with vaginitis. The most common pathogens of infantile vulvovaginitis is Escherichia coli, accounting for about 80% of the cases, followed by Staphylococcus aureus, hemolytic streptococcus, Proteus and so on. Vulvar vaginitis caused by such bacteria, can be manifested as acute inflammation, but often long-term existence and become chronic inflammation and prolonged unhealed, or even cause labia minora adhesions.