Although vWD occurs both in men and women, women are more likely to notice the symptoms because of abnormal bleeding during their menstrual period or after childbirth. The disorder can be inherited from either parent. It has been estimated that vWD affects up to one percent of the population. However, it is generally the least severe of the clotting disorders. Many people with vWD will have few, if any, symptoms. The main symptoms are easy bruising, frequent or prolonged nosebleeds, increased menstrual bleeding, and prolonged bleeding following injury, surgery, dental work, or childbirth.