Developmental precursors of child- and adolescent-onset schizophrenia and affective psychoses: diagnostic specificity and continuity with symptom dimensions

Background An increased rate of premorbid impairment has been reported in both child- and adolescent-onset schizophrenic and affective psychoses. Aims To examine the evidence for a specific association between premorbid impairment and child- and adolescent-onset schizophrenia, and whether specifi…