Definition of thought disorder in US English:

thought disorder


  • A disorder of cognitive organization, characteristic of psychotic mental illness, in which thoughts and conversation appear illogical and lacking in sequence and may be delusional or bizarre in content.

    • ‘While the auditory hallucinations can be a marker, I didn't think Tom exhibited signs of the other positive symptoms which, broadly, are delusions, bizarre behavior, and positive formal thought disorder.’
    • ‘When assessing a child's thinking, it is important to differentiate the thought disorder of psychosis from developmental delays or language disorders.’
    • ‘These include delusions, hallucinations and thought disorder, which together may be called ‘psychosis’.’
    • ‘Put simply, ‘psychosis’ generally means the presence of delusions, hallucinations and/or thought disorder.’
    • ‘In an acute psychotic episode it is the positive symptoms, i.e., hallucinations, delusions, thought disorder, not the negative symptoms, e.g., social withdrawal, that the antipsychotics control.’