The baby twisted his neck around may be caused by poor posture or ADHD. 1. poor posture: if the baby has been watching TV will lead to the neck to maintain a position for a long time, local discomfort, it is possible to appear neck twisting around, is a normal phenomenon, do not need to worry too much. 2. ADHD: ADHD is one of the most common mental behavioral disorders in childhood, and some of the children’s symptoms can last until adolescence or even adulthood, the cause of which has not been clearly defined, and is now believed to be the result of the interaction of multiple factors, such as genetics and the environment. Children with ADHD may have symptoms such as inattention, excessive activity and emotional impulsivity. If a baby has ADHD, he or she will have a neck that cranes around. In addition to poor posture, if your baby is constantly craning his neck around, he should seek medical attention for a definitive diagnosis.