To be diagnosed with delusional disorder, the delusion or delusions cannot be due to the effects of a drug, medication, or general medical condition, and delusional disorder cannot be diagnosed in an individual previously diagnosed with schizophrenia. A person with delusional disorder may be high functioning in daily life, and this disorder bears no relation to one's IQ.[5] According to German psychiatrist Emil Kraepelin, patients with delusional disorder remain coherent, sensible and reasonable.[6] 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 him or her), grandiose (believes that he/she is the greatest, strongest, fastest, richest, and/or most intelligent person ever), jealous (believes that the love partner is cheating on him/her), persecutory (believes that someone is following him/her to do some harm in some way), somatic (believes that he/she has a disease or medical condition), and mixed, i.e., having features of more than one subtype.[4] Delusions also
To be diagnosed with delusional disorder, the delusion or delusions cannot be due to the effects of a drug, medication, or general medical condition, and delusional disorder cannot be diagnosed in an individual previously diagnosed with schizophrenia. A person with delusional disorder may be high functioning in daily life, and this disorder bears no relation to one's IQ.[5] According to German psychiatrist Emil Kraepelin, patients with delusional disorder remain coherent, sensible and reasonable.[6] 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 him or her), grandiose (believes that he/she is the greatest, strongest, fastest, richest, and/or most intelligent person ever), jealous (believes that the love partner is cheating on him/her), persecutory (believes that someone is following him/her to do some harm in some way), somatic (believes that he/she has a disease or medical condition), and mixed, i.e., having features of more than one subtype.[4] Delusions also