Trauma is generally defined as an event that causes a lasting impact on an individual, ranging from a natural disaster or medical trauma to abuse. Traumatic events greatly impact development, especially when experienced during childhood and adolescence. These first eighteen years of a child’s life can be divided into three main stages using Erikson’s psychosocial theory and Piaget’s cognitive development theory as these theories provide comprehensive insight into the development of a child. Because of the differences in traumatic experiences and the age of the child, the effects and manifestations of a trauma’s influence will vary between these three different stages of childhood and adolescence. Many treatments have been developed that are deemed effective among children and adolescents, mainly involving medication and psychotherapy.