93). When a person turns 18, they become their own legal guardian. This becomes a very frustrating time for the parents of this child, due to the loss of authority and management of care that they face. For these parents to resume guardianship of their children with ASD, they must go through the court system to judge their child incompetent to make their own decisions. Although there is no known cause of ASD, mothers often feel that something they did during their pregnancy might be the cause of their child being born with this disorder. This often produces feelings of guilt and shame in parents, particularly in children.