How does male 20 day baby get frightened to do

Children's nervous system development is not perfect, it is easy to be stimulated by external sounds or things, crying, irritability, low fever, appetite decline and other startle symptoms. At this time, you can touch the baby's fontanelle, you can also use toys or put some soothing music to divert the child's attention, can alleviate the child scare phenomenon, but also can give the child more water, help heat dissipation.