Blistering can also be a symptom of certain infections: 1  Impetigo is a bacterial infection of the skin that can occur in both children and adults, and sometimes shows up after a viral infection. 2  Blisters are a symptom of impetigo. 3  Chickenpox is an infection caused by a virus.
Family trees are a genealogical tool which records information from searches into family history. It is intended to give an overview of any given family either as far back as they can be researched or the family name originates. It shows which people belong to the family by adding them on to different 'branches'.
Family history: The family structure and relationships within the family, including information about diseases in family members. Family history provides a ready view of problems or illnesses within the family and facilitates analysis of inheritance or familial patterns. Last Editorial Review: 5/13/2016.