DefinitionAtrophic vaginitis is inflammation of the vagina due to thinning tissue and decreased lubrication. It is related to reduced estrogen levels.For other types and causes of vaginitis, see: VulvovaginitisAlternative NamesVaginitis - atrophic; Vaginitis due to reduced estrogenCauses, incidence, and risk factorsAtrophic vaginitis is caused by a decrease in estrogen. Estrogen levels normally drop after menopause.Estrogen is very important in keeping the tissues of the vagina lubricated and healthy. Normally, the lining of the vagina makes a clear, lubricating fluid. This fluid makes sexual intercourse more comfortable and helps decrease vaginal irritation.Thinning or shrinking of the vaginal tissue causes dryness and inflammation.The following may cause estrogen levels to drop and lead