Nope :)
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Recent and comprehensive metaanalyses of scientific studies point to an association between a deterioration in aspects of IQ in psychotic patients, in particular perceptual reasoning.[5][6][7]
According to German psychiatrist Emil Kraepelin, patients with delusional disorder remain coherent, sensible and reasonable.[8][dubious – discuss] The Diagnostic and Statistical Manual of Mental Disorders (DSM) defines six subtypes of the disorder characterized as erotomanic (believes that someone is in love with them), grandiose (believes that they are the greatest, strongest, fastest, richest, and/or most intelligent person ever), jealous (believes that the love partner is cheating on them), persecutory (delusions that the person or someone to whom the person is close is being malevolently treated in some way), somatic (believes that they have a disease or medical condition), and mixed, i.e., having features of more than one subtype.[2] Delusions also occur as symptoms of many other mental disorders, especially the other psychotic disorders."
Not me.