The DOI matches its Crossref record; 2 of the 2 references it cites were found in a registry or an index.
Cannabis use and outcome of recent onset psychosis
Abstract
Purpose: To test the hypothesis that recent onset psychotic patients who use cannabis will have psychotic symptoms that are more severe and more persistent than those who do not use cannabis. Subjects and methods: We carried out a 4-year follow-up study of a cohort of 119 patients with recent onset of psychosis. The patients were divided into four groups according to duration of cannabis use, taking index admission and follow-up as reference points. Results: Those subjects who persisted in the use of cannabis had more positive (but not negative) symptoms and a more continuous illness at follow-up. Limitations: The main limitations of the study were: the relatively small sample size, and that the excess of male subjects and the presence of cannabis induced psychosis could have a confusing impact on the interpretation of the results. Conclusion: It is possible that psychotic patients who use cannabis are at a greater risk of a more continuous illness with more positive symptoms than those who do not.
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Citations
Cites
The Self-Medication Hypothesis of Substance Use Disorders: A Reconsideration and Recent Applications
Khantzian, E. J. (1997) · Harvard Review of Psychiatry · doi:10.3109/10673229709030550 · Cited by 3,242 · cited 1×
“However, other researchers explain the higher consumption of cannabis by psychotic patients as an attempt to relieve distressing symptoms of their illness or the adverse side-effects of antipsychotic medications [11,21].”
BackgroundDrug abuse in schizophrenic patients: clinical correlates and reasons for use
(1991) · American Journal of Psychiatry · doi:10.1176/ajp.148.2.224 · Cited by 547
Cited by
Schoeler, T., Monk, A., Sami, M. B., Klamerus, E., Foglia, E., Brown, R., Camuri, G., Altamura, A. C., Murray, R., & Bhattacharyya, S. (2016) · The Lancet Psychiatry · doi:10.1016/s2215-0366(15)00363-6 · Cited by 322
Self-citationKuepper, R., van Os, J., Lieb, R., Wittchen, H.-U., Hofler, M., & Henquet, C. (2011) · BMJ · doi:10.1136/bmj.d738 · Cited by 304
“and that patients with psychosis who continue to use cannabis show more severe and persistent symptoms”
BackgroundCOUGNARD, A., MARCELIS, M., MYIN-GERMEYS, I., DE GRAAF, R., VOLLEBERGH, W., KRABBENDAM, L., LIEB, R., WITTCHEN, H.-U., HENQUET, C., SPAUWEN, J., et al. (2007) · Psychological Medicine · doi:10.1017/s0033291706009731 · Cited by 276
Psychotic symptom and cannabis relapse in recent-onset psychosis: Prospective study
Hides, L., Dawe, S., Kavanagh, D. J., & Young, R. M. (2006) · British Journal of Psychiatry · doi:10.1192/bjp.bp.105.014308 · Cited by 166
Critical age windows for neurodevelopmental psychiatric disorders: evidence from animal models
Marco, E. M., Macrì, S., & Laviola, G. (2011) · Neurotoxicity Research · doi:10.1007/s12640-010-9205-z · Cited by 144
Metadata
- Authors
- Grech, A., Van Os, J., Jones, P. B., Lewis, S. W., & Murray, R. M.
- Venue
- European Psychiatry
- Publisher
- Cambridge University Press (CUP)
- Published
- 2005-06
- Volume
- 20
- Issue
- 4
- Pages
- 349-353
- ISSN
- 0924-9338 (ISSN-L)
- 1778-3585
- OpenAlex
- W2165596781
- Cited by
- 230
- References
- 2
- FWCI
- 6.31
- Type
- journal article
- Language
- en
- Open access
- closed
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