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Published on: November 21, 2013
Nicotine dependence and illness severity in schizophrenia
Rajeev Krishnadas1, Sameer Jauhar, Susan Telfer
1Sackler Institute of Psychobiological Research, University of Glasgow, Southern General Hospital, Glasgow G51 4TF, UK. Rajeev.Krishnadas@glasgow.ac.uk
Summary
People with schizophrenia who smoke heavily show more severe positive symptoms and are more likely to be unemployed. Nicotine dependence is linked to clinical symptoms and social adjustment, aiding smoking management in schizophrenia.
Area of Science:
- Psychiatry
- Clinical Psychology
- Neuroscience
Background:
- The high prevalence of cigarette smoking among individuals with schizophrenia remains poorly understood.
- Previous studies have yielded inconsistent findings due to heterogeneous patient populations.
Purpose of the Study:
- To investigate the connections between clinical characteristics, social functioning, and nicotine dependence in a specific population of individuals diagnosed with schizophrenia.
Main Methods:
- A cross-sectional study was conducted involving 131 individuals diagnosed with schizophrenia in Nithsdale, Scotland.
- Data collection focused on clinical symptoms, social adjustment, and levels of nicotine dependence.
Main Results:
- Smokers were predominantly male, younger, and three times more likely to be unemployed.
- Severe nicotine dependence correlated with higher scores on the Positive and Negative Syndrome Scale (PANSS) positive subscale and higher antipsychotic doses.
- Mild-to-moderate nicotine dependence was associated with higher scores on the PANSS negative subscale.
- Increased symptom severity was linked to poorer social adjustment.
- No significant differences in psychopathology or social adjustment were observed between individuals who quit smoking and those who never smoked.
Conclusions:
- The study identified associations between nicotine dependence, clinical symptoms, and social adjustment in individuals with schizophrenia.
- While causality cannot be established, understanding the link between nicotine dependence and psychopathology may inform smoking cessation strategies.
- Further longitudinal research is recommended to elucidate these relationships.
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