Introduction: Child Psychology helps us to understand the changes that occurred from childhood and the way to handle it. They are considered as proposals emanated by great authors who played an important role in every individual__ampersandsignrsquo;s development from birth. Child__ampersandsignrsquo;s behaviour management in medical or dental clinic is an essential requirement to complete the health care of a pediatric patient. Aim: To successfully handle a pediatric patient in a clinical setup, one should have sufficient knowledge of psychological and personality development at different stages of childhood. Anxiety is a common problem that affects people of all ages, most prominently appear in childhood and adolescence. Conclusion: It not only has a distressing effect on the child but also their family which can affect the overall well-being of a child. This article gives an overview of various psychological stages which a human undergo from childhood till death.