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Polydipsia and schizophrenia in a psychiatric hospital: a replication study
Jose de Leon1, Joseph Tracy, Eileen McCann
1Mental Health Research Center at Eastern State Hospital, 627 West Fourth St., Lexington, KY 40508, USA. jdeleon@uky.edu
Schizophrenia Research
|September 12, 2002
Summary
Schizophrenia and smoking are consistently linked to polydipsia in psychiatric patients, independent of substance use or medications. This association, particularly with smoking, was confirmed in a second hospital study.
Area of Science:
- Psychiatry
- Clinical Psychology
Background:
- Polydipsia, excessive thirst, is a significant concern in psychiatric inpatients.
- Previous research suggested associations between polydipsia, schizophrenia, and smoking.
Purpose of the Study:
- To replicate the association between schizophrenia, smoking, and polydipsia.
- To investigate if alcohol and drug use mediate this relationship.
- To explore factors contributing to water intoxication in polydipsic patients.
Main Methods:
- Logistic regression analysis was used to model variables associated with polydipsia in 588 inpatients.
- Data from two US hospital studies were combined for a comprehensive analysis.
Main Results:
- In the second study, smoking showed a significant association with polydipsia; schizophrenia had borderline significance.
- Combined analysis confirmed associations of schizophrenia, long hospitalization, and smoking with polydipsia.
- Male gender and Caucasian race increased water intoxication risk in polydipsic patients.
Conclusions:
- The link between polydipsia, schizophrenia, smoking, and chronicity is robust and consistent across different definitions of polydipsia.
- Psychiatric medications do not appear to be the primary cause of polydipsia in these patient populations.
- Findings highlight the need for targeted interventions for polydipsia in severely mentally ill individuals.