Family History refers to the information obtained from the parents of a specific client (child/patient) regarding potentially significant historical milestones and events that might have a bearing on the child's current difficulties. Using a background questionnaire or interview, information is obtained from the parents regarding potentially significant developmental milestones and historical events that might have a bearing on the child's (client) current difficulties.

Family history also refers to information gathered in a psychological assessment regarding the sequence of major events in the lives of the client's relatives, including those who are closest to the client as well as more distantly related family members.

Family History is also known as Developmental History
Other /More definition:
Family history or Developmental history refers to information obtained from the parents about potentially significant historical milestones and events that might have a bearing on the child"s current difficulties.