What is the defining feature of the residual type of schizophrenia?

The defining feature of the residual type of schizophrenia is the presence of negative symptoms. In this subtype, individuals have experienced at least one episode of schizophrenia, but currently, they do not exhibit the prominent positive symptoms such as hallucinations or delusions. Instead, they may show diminished emotional expression, social withdrawal, or reduced motivation, which are characteristic of negative symptoms.

This focus on negative symptoms distinguishes the residual type from other forms of schizophrenia that may have more prominent positive manifestations. While individuals may still experience some residual positive symptoms, the hallmark of this subtype is the predominance of negative symptoms, which can significantly impact their overall functioning and quality of life.