In addition, Dr. Chiu says that brain damage may result from such factors as a lack of oxygen in the process of delivery, infection in the womb, or extreme jaundice early in the infant's life. Such damage can lead to problems with the brain that add up to "ADHD". Purposeless activity Statistics from other countries indicate that the prevalence of hyperactivity is about 5-10 %.
除此之外，丘彥南指出，產程中缺氧、胎內感染、嬰兒早期黃膽值過高等因素，都可能對腦部造成損傷，導致腦細胞控制不良的「注意力不足過動症」。