直立性调节障碍,又叫直立性脑贫血,简称 O·D 病,据国外(日本)有关资料报导,该病在青少年中的发病率为10～15%。本病多发于春夏之交,具有循环、消化系统等多种症状改变,直接影响他们的学习与身体健康。目前国内报导罕见。为了解该病在我县青少年中的发生情况,故对本县中小学生作了抽样调查: Orthopedic disorders, also known as orthostatic anemia, referred to as O · D disease, according to foreign (Japan) data reported that the incidence of the disease in adolescents was 10 to 15%. The disease occurs in the turn of the spring and summer, with the cycle, digestive system and other symptoms change, a direct impact on their learning and physical health. Domestic reports are rare at present. In order to understand the incidence of the disease in our county adolescents, so the county primary and secondary students made a sample survey: