The symptoms of infant narcolepsy are mainly reflected in children’s sleep time is too long, children have no spirit, such as the usual infant sleep time of about 14 hours a day, if suddenly extended to 15-20 hours, it belongs to the state of narcolepsy, infant narcolepsy is mainly caused by the following circumstances: 1, due to the symptoms of children very tired, if the infant activity is relatively large, especially parents take children out to play for too long. If a child is very tired, if the infant has a lot of activity, especially if the parents take the child out to play for too long, it will often cause physiological compensatory drowsiness in children, and the child’s mental state will soon improve after a period of sleep. 2, caused by disease in children, after children suffering from encephalitis or fever will cause drowsiness.