First-episode psychosis in the military: A comparative study of prodromal symptoms
Abstract
Objective The objective of this study is to provide a retrospective description of prodromal symptoms of young military servicemen with first-episode psychosis, and a comparison with first-episode non-psychotic disorders. Method Thirty consecutive servicemen presenting with first-episode psychosis were studied. Thirty-four randomly selected servicemen from 123 with non-psychotic disorders served as comparison. A combination of unstructured and semistructured interviews with the patient and other informants was used to describe the prodromal symptoms. Results The most common prodromal psychotic symptoms were social withdrawal (83%); anxiety (77%); sleep disturbance (77%); disturbance in attention, concentration or memory (73%); deterioration in studies in school (70%); depressed mood (63%); odd behaviour (53%); and anger or irritability (53%). Common symptoms found in first-episode psychosis and non-psychotic patients included sleep disturbance, anxiety, depressed mood and anger or irritability. Common symptoms that were associated with the psychotic prodrome were social withdrawal (p Conclusion Cognitive disturbances and attenuated negative symptoms appear to be more specific to the psychotic prodrome in young patients with first-episode psychosis.
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Sleep disruption was one of the most common symptoms reported in the prodrome of psychotic disorders (77%).
“Sleep disruption was one of the most common symptoms reported in the prodrome of psychotic disorders (77%), although this is non-specific as sleep disruption was even more common (97%) in the non-psychotic clinical group.”
From The role of sleep dysfunction in the occurrence of delusions and hallucinations: A systematic review (2015) · cites this paper as Tan and Ang (2001)
Sleep disruption was even more common (97%) in the non-psychotic clinical group than in the prodrome of psychotic disorders.
“Sleep disruption was one of the most common symptoms reported in the prodrome of psychotic disorders (77%), although this is non-specific as sleep disruption was even more common (97%) in the non-psychotic clinical group.”
From The role of sleep dysfunction in the occurrence of delusions and hallucinations: A systematic review (2015) · cites this paper as Tan and Ang (2001)
Cites
Diagnostic and Statistical Manual of Mental Disorders
Williams, J. B. W., & First, M. B. (2013) · Oxford University Press eBooks · doi:10.1093/acrefore/9780199975839.013.104 · Cited by 109,841 · see citing works
Dementia Praecox or the Group of Schizophrenias
(1951) · Journal of the American Medical Association · doi:10.1001/jama.1951.02920270079043 · Cited by 4,407 · see citing works
Social class and mental illness: Community study.
Hollingshead, A. B., & Redlich, F. C. (1958) · John Wiley & Sons, Inc. eBooks · doi:10.1037/10645-000 · Cited by 3,744 · see citing works
Manic-Depressive Insanity and Paranoia.
(1921) · JAMA · doi:10.1001/jama.1921.02630330070026 · Cited by 1,612 · see citing works
Manic Depressive Insanity and Paranoia
Kraepelin, E. (1921) · The Journal of Nervous and Mental Disease · doi:10.1097/00005053-192104000-00057 · Cited by 1,327 · see citing works
The Prodromal Phase of First-episode Psychosis: Past and Current Conceptualizations
Yung, A. R., & McGorry, P. D. (1996) · Schizophrenia Bulletin · doi:10.1093/schbul/22.2.353 · Cited by 1,168 · cited 7× · see citing works
“The authors would like to thank Patrick D. McGorry, Director, Youth Program (incorporating EPPIC), Mental Health Services for Kids and Youth (MHSKY), Professor, Department of Psychiatry, University of Melbourne; and Chee Kuan Tsee, Senior Consultant Psychiatrist, Woodbridge Hospital, for their helpful comments on earl…”
BackgroundResultInfluentialEPPIC: An Evolving System of Early Detection and Optimal Management
McGorry, P. D., Edwards, J., Mihalopoulos, C., Harrigan, S., & Jackson, H. J. (1996) · Schizophrenia Bulletin · doi:10.1093/schbul/22.2.305 · Cited by 936 · see citing works
Duration of psychosis and outcome in first-episode schizophrenia
Loebel, A. D., Lieberman, J. A., Alvir, J. M., Mayerhoff, D. I., Geisler, S. H., & Szymanski, S. (1992) · American Journal of Psychiatry · doi:10.1176/ajp.149.9.1183 · Cited by 880 · see citing works
Neuroleptics and the Natural Course of Schizophrenia
Wyatt, R. J. (1991) · Schizophrenia Bulletin · doi:10.1093/schbul/17.2.325 · Cited by 787 · see citing works
Annals of the Academy of Medicine, Singapore
(2020) · Annals of the Academy of Medicine Singapore · doi:10.47102/annals-acadmedsg · Cited by 742 · see citing works
The Early Symptoms of Schizophrenia
Chapman, J. (1966) · British Journal of Psychiatry · doi:10.1192/bjp.112.484.225 · Cited by 675 · see citing works
The Initial Prodrome in Psychosis: Descriptive and Qualitative Aspects
Yung, A., & McGorry, P. (1996) · Australian and New Zealand journal of psychiatry (Print) · doi:10.3109/00048679609062654 · Cited by 504 · see citing works
Predictors of Treatment Response From a First Episode of Schizophrenia or Schizoaffective Disorder
Robinson, D. G., Woerner, M. G., Alvir, J. M. J., Geisler, S., Koreen, A., Sheitman, B., Chakos, M., Mayerhoff, D. I., Bilder, R. M., GOLDMAN, R. S., et al. (1999) · American Journal of Psychiatry · doi:10.1176/ajp.156.4.544 · Cited by 466 · see citing works
Kolb, B. E., & Whishaw, I. Q. (1983) · The Journal of Nervous and Mental Disease · doi:10.1097/00005053-198307000-00008 · Cited by 464 · see citing works
Generalized Cognitive Deficits in Schizophrenia
Mohamed, S., Paulsen, J. S., OʼLeary, D. S., Arndt, S. V., & Andreasen, N. C. (1999) · Archives of General Psychiatry · doi:10.1001/archpsyc.56.8.749 · Cited by 432 · see citing works
Early Detection and Intervention With Schizophrenia: Rationale
McGlashan, T. H., & Johannessen, J. O. (1996) · Schizophrenia Bulletin · doi:10.1093/schbul/22.2.201 · Cited by 416 · see citing works
Establishing the onset of psychotic illness
Beiser, M., Erickson, D., Fleming, J. A. E., & Iacono, W. G. (1993) · American Journal of Psychiatry · doi:10.1176/ajp.150.9.1349 · Cited by 373 · see citing works
Causes and consequences of duration of untreated psychosis in schizophrenia
Drake, R., Haley, C. J., Akhtar, S., & Lewis, S. W. (2000) · The British Journal of Psychiatry · doi:10.1192/bjp.177.6.511 · Cited by 347 · see citing works
Schizophrenia and brain dysfunction: An integration of recent neurodiagnostic findings.
Seidman, L. J. (1983) · Psychological Bulletin · doi:10.1037/0033-2909.94.2.195 · Cited by 320 · see citing works
Intellectual Deficits in First-Episode Schizophrenia: Evidence for Progressive Deterioration
Bilder, R. M., Lipschutz-Broch, L., Reiter, G., Geisler, S., Mayerhoff, D. I., & Lieberman, J. A. (1992) · Schizophrenia Bulletin · doi:10.1093/schbul/18.3.437 · Cited by 285 · see citing works
Ho, B., Andreasen, N. C., Flaum, M. A., Nopoulos, P., & Miller, D. D. (2000) · American Journal of Psychiatry · doi:10.1176/appi.ajp.157.5.808 · Cited by 259 · see citing works
Neuropsychological test results associated with psychiatric disorders in adults.
Heaton, R. K., Baade, L. E., & Johnson, K. L. (1978) · Psychological Bulletin · doi:10.1037/0033-2909.85.1.141 · Cited by 250 · see citing works
Craig, T., Bromet, E. J., Fennig, S., Tanenberg‐Karant, M., Lavelle, J., & Galambos, N. (2000) · American Journal of Psychiatry · doi:10.1176/ajp.157.1.60 · Cited by 233 · see citing works
Early Detection and Intervention in Schizophrenia: Research
McGlashan, T. H. (1996) · Schizophrenia Bulletin · doi:10.1093/schbul/22.2.327 · Cited by 213 · see citing works
Larsen, T. K., Moe, L. C., Vibe-Hansen, L., & Johannessen, J. O. (2000) · Schizophrenia Research · doi:10.1016/s0920-9964(99)00169-3 · Cited by 193 · see citing works
Klosterkötter, J., Schultze-Lutter, F., Gross, G., Huber, G., & Steinmeyer, E. M. (1997) · Acta Psychiatrica Scandinavica · doi:10.1111/j.1600-0447.1997.tb09652.x · Cited by 145 · see citing works
Royal Park Multidiagnostic Instrument for Psychosis: Part II. Development, Reliability, and Validity
McGorry, P. D., SINGH, B. S., Copolov, D., Kaplan, I., Dossetor, C. R., & van Riel, R. J. (1990) · Schizophrenia Bulletin · doi:10.1093/schbul/16.3.517 · Cited by 133 · see citing works
Royal Park Multidiagnostic Instrument for Psychosis: Part I. Rationale and Review
McGorry, P. D., Copolov, D., & SINGH, B. S. (1990) · Schizophrenia Bulletin · doi:10.1093/schbul/16.3.501 · Cited by 115 · see citing works
Scully, P. J., Coakley, G. N., Kinsella, A., & Waddington, J. L. (1997) · Psychological Medicine · doi:10.1017/s0033291797005722 · Cited by 109 · see citing works
Evil or Ill? Justifying the Insanity Defense
Robinson, G. E. (1999) · American Journal of Psychiatry · doi:10.1176/ajp.156.10.1659 · Cited by 106 · see citing works
Pharmacotherapy of first-episode schizophrenia
Remington, G. J., Kapur, S., & Zipursky, R. B. (1998) · The British Journal of Psychiatry · doi:10.1192/s0007125000297687 · Cited by 91 · see citing works
THE DIAGNOSIS OF PREPSYCHOTIC SCHIZOPHRENIA
Meares, A. (1959) · The Lancet · doi:10.1016/s0140-6736(59)91134-1 · Cited by 76 · see citing works
Beginning schizophrenia observed by significant others
Hambrecht, M., Häfner, H., & Löffler, W. (1994) · Social Psychiatry and Psychiatric Epidemiology · doi:10.1007/bf00805621 · Cited by 52 · see citing works
Evaluating the Importance of Reducing the Duration of Untreated Psychosis
McGorry, P. D. (2000) · Australian & New Zealand Journal of Psychiatry · doi:10.1080/000486700236 · Cited by 46 · see citing works
Research and treatment strategies in first-episode psychoses: The Pittsburgh experience
Keshavan, M. S., Schooler, N. R., Sweeney, J. A., Haas, G. L., & Pettegrew, J. W. (1998) · The British Journal of Psychiatry · doi:10.1192/s0007125000297675 · Cited by 33 · see citing works
A Longitudinal Study of Schizophrenia in Adolescence: I. The One‐ to Three‐Year Outcome
Inoue, K., Nakajima, T., & Kato, N. (1986) · Psychiatry and Clinical Neurosciences · doi:10.1111/j.1440-1819.1986.tb03136.x · Cited by 19 · see citing works
Evaluating the Importance of Reducing the Duration of Untreated Psychosis
McGorry, P. D. (2000) · Australian & New Zealand Journal of Psychiatry · doi:10.1177/000486740003401s22 · Cited by 15 · see citing works
The Sense of Becoming Psychotic†
Stein, W. J. H. (1967) · Psychiatry · doi:10.1080/00332747.1967.11023515 · Cited by 10 · see citing works
Psychological disorders in Singaporean national servicemen.
Yg, A. (1997) · PubMed · Cited by 1 · see citing works
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Ruhrmann, S., Schultze-Lutter, F., Salokangas, R. K. R., Heinimaa, M., Linszen, D., Dingemans, P., Birchwood, M., Patterson, P., Juckel, G., Heinz, A., et al. (2010) · Archives of General Psychiatry · doi:10.1001/archgenpsychiatry.2009.206 · Cited by 632 · see citing works
Addington, J., Cadenhead, K. S., Cannon, T. D., Cornblatt, B., McGlashan, T. H., Perkins, D. O., Seidman, L. J., Tsuang, M. T., Walker, E. F., Woods, S. W., et al. (2007) · Schizophrenia Bulletin · doi:10.1093/schbul/sbl075 · Cited by 299 · see citing works
First-Episode Psychosis: Psychopathology, Quality of Life, and Functional Outcome
MALLA, A. K. (2005) · Schizophrenia Bulletin · doi:10.1093/schbul/sbi031 · Cited by 284 · see citing works
The role of sleep dysfunction in the occurrence of delusions and hallucinations: A systematic review
Reeve, S., Sheaves, B., & Freeman, D. (2015) · Clinical Psychology Review · doi:10.1016/j.cpr.2015.09.001 · Cited by 273 · see citing works
Hartley, S., Barrowclough, C., & Haddock, G. (2013) · Acta Psychiatrica Scandinavica · doi:10.1111/acps.12080 · Cited by 234 · see citing works
A Social Deafferentation Hypothesis for Induction of Active Schizophrenia
Hoffman, R. E. (2007) · Schizophrenia Bulletin · doi:10.1093/schbul/sbm079 · Cited by 199 · see citing works
Schizophrenia and sleep disorders: links, risks, and management challenges
Kaskie, R. E., Graziano, B., & Ferrarelli, F. (2017) · Nature and Science of Sleep · doi:10.2147/nss.s121076 · Cited by 201 · see citing works
Corcoran, C. M., Kimhy, D., Parrilla-Escobar, M. A., Cressman, V. L., Stanford, A. D., Thompson, J. L., Ben‐David, S., Crumbley, A. H., Schobel, S., Moore, H. M., et al. (2010) · Psychological Medicine · doi:10.1017/s0033291710000802 · Cited by 156 · see citing works
Quality of sleep in patients with schizophrenia is associated with quality of life and coping
Hofstetter, J. R., Lysaker, P. H., & Mayeda, A. R. (2005) · BMC Psychiatry · doi:10.1186/1471-244x-5-13 · Cited by 155 · see citing works
A systematic review of the nature and correlates of sleep disturbance in early psychosis
Davies, G., Haddock, G., Yung, A. R., Mulligan, L. D., & Kyle, S. D. (2016) · Sleep Medicine Reviews · doi:10.1016/j.smrv.2016.01.001 · Cited by 154 · see citing works
Ruhrmann, S., Schultze-Lutter, F., & Klosterkötter, J. (2010) · Schizophrenia Research · doi:10.1016/j.schres.2010.03.015 · Cited by 147 · see citing works
Trajectory to a first episode of psychosis: a qualitative research study with families
Corcoran, C. M., Gerson, R. S., Sills‐Shahar, R., Nickou, C., McGlashan, T. H., Malaspina, D., & Davidson, L. (2007) · Early Intervention in Psychiatry · doi:10.1111/j.1751-7893.2007.00041.x · Cited by 113 · see citing works
Carrión, R., Demmin, D., Auther, A., McLaughlin, D., Olsen, R. H., Lencz, T., Correll, C., & Cornblatt, B. (2016) · Journal of Psychiatric Research · doi:10.1016/j.jpsychires.2016.06.021 · Cited by 86 · see citing works
Hoffman, R. E., Varanko, M., Gilmore, J., & Mishara, A. L. (2008) · Psychological Medicine · doi:10.1017/s0033291707002395 · Cited by 79 · see citing works
Sleep disturbances in individuals at clinical high risk for psychosis
Poe, S.-L., Brucato, G., Bruno, N., Arndt, L. Y., Ben-David, S., Gill, K. E., Colibazzi, T., Kantrowitz, J. T., Corcoran, C. M., & Girgis, R. R. (2017) · Psychiatry Research · doi:10.1016/j.psychres.2016.12.029 · Cited by 75 · see citing works
Lunsford‐Avery, J. R., & Mittal, V. A. (2013) · Clinical Psychology Science and Practice · doi:10.1111/cpsp.12041 · Cited by 73 · see citing works
Zanini, M., Castro, J., Coelho, F. M., Bittencourt, L., Bressan, R. A., Tufik, S., & Brietzke, E. (2013) · Neuroscience & Biobehavioral Reviews · doi:10.1016/j.neubiorev.2013.08.012 · Cited by 69 · see citing works
Iyer, S., Boekestyn, L., Cassidy, C., King, S., Joober, R., & Malla, A. (2008) · Psychological Medicine · doi:10.1017/s0033291708003152 · Cited by 68 · see citing works
Kakeda, S., & Korogi, Y. (2010) · Neuroradiology · doi:10.1007/s00234-010-0717-2 · Cited by 69 · see citing works
Winsky‐Sommerer, R., de Oliveira, P., Loomis, S., Wafford, K. A., Dijk, D., & Gilmour, G. (2018) · Neuroscience & Biobehavioral Reviews · doi:10.1016/j.neubiorev.2018.09.027 · Cited by 66 · see citing works
Moriya, J., Kakeda, S., Abe, O., Gotō, N., Yoshimura, R., Hori, H., Ohnari, N., Satô, T., Aoki, S., Ohtomo, K., et al. (2009) · Schizophrenia Research · doi:10.1016/j.schres.2009.10.002 · Cited by 65 · see citing works
Brown, B. J., Rutherford, P., & Crawford, P. (2015) · International Journal of Nursing Studies · doi:10.1016/j.ijnurstu.2015.04.020 · Cited by 61 · see citing works
Insomnia in patients with schizophrenia: current understanding and treatment options
Robertson, I. H., Cheung, A., & Fan, X. (2019) · Progress in Neuro-Psychopharmacology and Biological Psychiatry · doi:10.1016/j.pnpbp.2019.01.016 · Cited by 54 · see citing works
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Hofstetter, J. R., Mayeda, A. R., Happel, C. G., & Lysaker, P. H. (2003) · The Journal of Nervous and Mental Disease · doi:10.1097/01.nmd.0000071591.91247.67 · Cited by 47 · see citing works
Sleep disturbances and the At Risk Mental State: A systematic review and meta-analysis
Clarke, L., Chisholm, K., Cappuccio, F. P., Tang, N. K. Y., Miller, M. A., Elahi, F., & Thompson, A. D. (2020) · Schizophrenia Research · doi:10.1016/j.schres.2020.06.027 · Cited by 48 · see citing works
Academic deterioration prior to first episode schizophrenia in young Singaporean males
Ang, Y., & Tan, H. Y. (2003) · Psychiatry Research · doi:10.1016/s0165-1781(03)00257-9 · Cited by 44 · see citing works
Self-citationSleep Disturbance in Individuals at Clinical High Risk for Psychosis
Zaks, N., Velikonja, T., Parvaz, M. A., Zinberg, J. L., Done, M. E., Mathalon, D. H., Addington, J., Cadenhead, K. S., Cannon, T. D., Cornblatt, B. A., et al. (2021) · Schizophrenia Bulletin · doi:10.1093/schbul/sbab104 · Cited by 44 · see citing works
Benrimoh, D. A., Dlugunovych, V., Wright, A. C., Phalen, P. L., Funaro, M. C., Ferrara, M., Powers, A. R., Woods, S. W., Gülöksüz, S., Yung, A. R., et al. (2024) · Molecular Psychiatry · doi:10.1038/s41380-024-02415-w · Cited by 43 · see citing works
Cognitive Function and Symptoms in Adolescents with Schizotypal Personality Disorder
Trotman, H. D., McMillan, A., & Walker, E. F. (2005) · Schizophrenia Bulletin · doi:10.1093/schbul/sbj069 · Cited by 41 · see citing works
Hoffman, R. E. (2008) · Clinical EEG and Neuroscience · doi:10.1177/155005940803900213 · Cited by 41 · see citing works
Slotema, C. W., Bayrak, H., Linszen, M. M. J., Deen, M. L., & Sommer, I. E. (2019) · Acta Psychiatrica Scandinavica · doi:10.1111/acps.13012 · Cited by 38 · see citing works
Are Circadian Disturbances a Core Pathophysiological Component of Schizophrenia?
Delorme, T. C., Srivastava, L. K., & Cermakian, N. (2020) · Journal of Biological Rhythms · doi:10.1177/0748730420929448 · Cited by 38 · see citing works
Chronotype in individuals with schizophrenia: A meta-analysis
Linke, M., & Jankowski, K. S. (2021) · Schizophrenia Research · doi:10.1016/j.schres.2021.07.020 · Cited by 33 · see citing works
Early Signs In Schizophrenia Spectrum Disorders
Norman, R. M. G., Scholten, D. J., MALLA, A. K., & Ballageer, T. (2005) · The Journal of Nervous and Mental Disease · doi:10.1097/01.nmd.0000149214.17924.d9 · Cited by 33 · see citing works
Focus on psychiatry in Singapore
Kua, E. H. (2004) · The British Journal of Psychiatry · doi:10.1192/bjp.185.1.79 · Cited by 31 · see citing works
Associations between psychotic-like symptoms and inattention/hyperactivity symptoms
Hurtig, T. M., Taanila, A. M., Veijola, J. M., Ebeling, H. E., Mäki, P. H., Miettunen, J., Kaakinen, M., Joukamaa, M. I., Therman, S., Heinimaa, M., et al. (2009) · Social Psychiatry and Psychiatric Epidemiology · doi:10.1007/s00127-009-0165-7 · Cited by 28 · see citing works
Maki, P. M., Koskela, S., Murray, G. K., Nordström, T., Miettunen, J., Jääskeläinen, E., & Veijola, J. M. (2014) · European Psychiatry · doi:10.1016/j.eurpsy.2013.11.003 · Cited by 27 · see citing works
Psychosis: conceptual and ethical aspects of early diagnosis and intervention
Heinimaa, M., & Larsen, T. K. (2002) · Current Opinion in Psychiatry · doi:10.1097/00001504-200209000-00012 · Cited by 26 · see citing works
Cooper, S., Klugman, J., Heimberg, R. G., Anglin, D. M., & Ellman, L. M. (2015) · Psychiatry Research · doi:10.1016/j.psychres.2015.11.027 · Cited by 26 · see citing works
‘No man is an island’. Testing the specific role of social isolation in formal thought disorder
de Sousa, P., Spray, A., Sellwood, W., & Bentall, R. P. (2015) · Psychiatry Research · doi:10.1016/j.psychres.2015.09.010 · Cited by 25 · see citing works
Delorme, T. C., Srivastava, L. K., & Cermakian, N. (2021) · Brain Behavior and Immunity · doi:10.1016/j.bbi.2020.12.030 · Cited by 24 · see citing works
Lim, L. E. C., Kua, E. H., Tan, H. Y., Choo, W. C., & Doshi, S. (2004) · Social Psychiatry and Psychiatric Epidemiology · doi:10.1007/s00127-004-0717-9 · Cited by 24 · see citing works
Self-citationBowman, S., McKinstry, C., Howie, L., & McGorry, P. D. (2020) · Early Intervention in Psychiatry · doi:10.1111/eip.12928 · Cited by 23 · see citing works
Hallucinations and Other Psychotic Symptoms in Patients with Borderline Personality Disorder
Minaříková, K., Praško, J. P., Houdkova, M., Vaněk, J., Kantor, K., Šlepecký, M., Látalová, K., & Ocisková, M. (2022) · Neuropsychiatric Disease and Treatment · doi:10.2147/ndt.s360013 · Cited by 23 · see citing works
Cohen, S., Goldsmith, D. R., Ning, C. S., Addington, J., Bearden, C. E., Cadenhead, K. S., Cannon, T. D., Cornblatt, B. A., Keshavan, M. S., Mathalon, D. H., et al. (2024) · Psychiatry Research · doi:10.1016/j.psychres.2024.116147 · Cited by 22 · see citing works
Fekih-Romdhane, F., Hallit, S., Cheour, M., & Jahrami, H. (2022) · Frontiers in Psychiatry · doi:10.3389/fpsyt.2022.1011963 · Cited by 23 · see citing works
Emotion regulation in patients with psychosis: A link between insomnia and paranoid ideation?
Grezellschak, S., Jansen, A., & Westermann, S. (2017) · Journal of Behavior Therapy and Experimental Psychiatry · doi:10.1016/j.jbtep.2016.08.001 · Cited by 20 · see citing works
Baldini, V., Pasquino, F., Ronchi, D. D., Plazzi, G., Pelizza, L., & Menchetti, M. (2025) · Schizophrenia Research · doi:10.1016/j.schres.2025.06.008 · Cited by 20 · see citing works
Lederman, O., Rosenbaum, S., Maloney, C., Curtis, J., & Ward, P. B. (2017) · Psychiatry Research · doi:10.1016/j.psychres.2017.08.034 · Cited by 16 · see citing works
Evaluating and treating the prodromal stage of schizophrenia
Perkins, D. O. (2004) · Current Psychiatry Reports · doi:10.1007/s11920-004-0079-8 · Cited by 17 · see citing works
Associations between metabolic disorders and sleep disturbance in patients with schizophrenia
Yan, H., Huang, Z., Lu, Y., Qiu, Y., Li, M., & Li, J. (2023) · Comprehensive Psychiatry · doi:10.1016/j.comppsych.2023.152369 · Cited by 11 · see citing works
Arribas, M., Barnby, J. M., Patel, R., McCutcheon, R. A., Kornblum, D., Shetty, H., Krakowski, K., Stahl, D. R., Koutsouleris, N., McGuire, P. K., et al. (2025) · Molecular Psychiatry · doi:10.1038/s41380-025-02896-3 · Cited by 10 · see citing works
Nuzum, E., Hammoud, R., Spencer, T. J., Akande, I., & Tognin, S. (2021) · Early Intervention in Psychiatry · doi:10.1111/eip.13210 · Cited by 10 · see citing works
Combinations and Temporal Associations Among Precursor Symptoms Before a First Episode of Psychosis
Paquin, V., MALLA, A. K., Iyer, S. N., Lepage, M., Joober, R., & Shah, J. L. (2023) · Schizophrenia Bulletin · doi:10.1093/schbul/sbad152 · Cited by 8 · see citing works
Nishimura, J., Kakeda, S., Abe, O., Yoshimura, R., Gotō, N., Hori, H., Satô, T., Takao, H., Kabasawa, H., Nakamura, J., et al. (2014) · Neuropsychiatric Disease and Treatment · doi:10.2147/ndt.s72715 · Cited by 8 · see citing works
Yan, H., Li, G., Zhang, X., Zhang, C., Li, M., Qiu, Y., Sun, W., Dong, Y., Li, S., & Li, J. (2024) · BMC Psychiatry · doi:10.1186/s12888-024-05805-0 · Cited by 6 · see citing works
Symptoms at Onset in First Episode Schizophrenia: Caregivers Perspectives
Tharoor, H., & Ganesh, A. (2015) · Indian Journal of Psychological Medicine · doi:10.4103/0253-7176.168564 · Cited by 6 · see citing works
Sleep in Schizophrenia and Substance Use Disorders: A Review of the Literature
Horn, W. T., Akerman, S. C., & Sateia, M. J. (2013) · Journal of Dual Diagnosis · doi:10.1080/15504263.2013.806088 · Cited by 6 · see citing works
Early signs and symptoms of psychosis among Palauan adolescents
Madraisau, S., Tomoichi, U., Ord, L. M., Florsheim, P., Phillips, L., Blailes, F., Basilius, M., Kuartei, S., Tiobech, J., Myles-Worsley, M., et al. (2010) · Early Intervention in Psychiatry · doi:10.1111/j.1751-7893.2010.00164.x · Cited by 6 · see citing works
Cognitive Dysfunction in Schizophrenia: A Perspective from the Clinic to Genetic Brain Mechanisms
Tan, H. Y. (2009) · Annals of the Academy of Medicine Singapore · doi:10.47102/annals-acadmedsg.v38n5p420 · Cited by 5 · see citing works
Self-citationTian, M., Cai, S. L., Zhuo, J. M., & Zhang, L. L. (2019) · Medicine · doi:10.1097/md.0000000000013688 · Cited by 4 · see citing works
de Crom, S. A. M., de Haan, L., & Schirmbeck, F. N. (2021) · Psychiatry Research · doi:10.1016/j.psychres.2021.113728 · Cited by 4 · see citing works
László, S., Nagy, Á., Dombi, J. D., Hompoth, E. A., Rudics, E., Szabó, Z., Dér, A., Búzás, A., Viharos, Z. J., Hoang, A. T., et al. (2025) · BMC Psychiatry · doi:10.1186/s12888-025-06971-5 · Cited by 2 · see citing works
Evaluating and treating the prodromal stage of schizophrenia
Perkins, D. O. (2005) · Current Psychosis & Therapeutics Reports · doi:10.1007/bf02629426 · Cited by 2 · see citing works
Treatment of Sleep Disorders in Specific Psychiatric Diseases
Wetter, T. C., & Steiger, A. (2022) · Springer eBooks · doi:10.1007/978-3-030-62059-2_451 · Cited by 2 · see citing works
Depressed mood as a transdiagnostic target relevant to anxiety and/or psychosis: a scoping review
Mavindidze, E., Dambi, J. M., Nyamayaro, P. C., Beji‐Chauke, R., Tunduwani, T. D., Shava, B. K., Mavhu, W. M., Abas, M., Chibanda, D., & Nhunzvi, C. (2025) · BMJ Open · doi:10.1136/bmjopen-2024-092233 · Cited by 1 · see citing works
Clayton, D., & Grover, S. (2026) · Case Reports in Psychiatry · doi:10.1155/crps/3048932 · Cited by 1 · see citing works
Psychotic Disorders and Best Models of Care
Yam, P. M., D, D. M. M., & Fanous, A. H. (2019) · Springer eBooks · doi:10.1007/978-3-030-05384-0_8 · Cited by 1 · see citing works
Treatment of Sleep Disorders in Specific Psychiatric Diseases
Wetter, T. C., & Steiger, A. (2021) · Springer eBooks · doi:10.1007/978-3-319-56015-1_451-1 · Cited by 1 · see citing works
Cognitive Decline in Preschizophrenia Patients
Tan, H. Y., & Ang, Y. (2004) · American Journal of Psychiatry · doi:10.1176/appi.ajp.161.3.580-a · Cited by 1 · see citing works
Self-citationAdery, L. L. (2019) · Cited by 1 · see citing works
Arribas, M., Barnby, J. M., Patel, R., McCutcheon, R. A., Kornblum, D., Shetty, H., Krakowski, K., Stahl, D. R., Koutsouleris, N., McGuire, P. K., et al. (2024) · medRxiv · doi:10.1101/2024.03.08.24303965 · Cited by 1 · see citing works
Statucka, M. (2014) · CUNY Academic Works (City University of New York)
Sleep Dysfunction in Adolescents at High Risk for Psychosis
Avery, J. R. L. (2014) · CU Scholar (University of Colorado Boulder)
Schlaf bei psychischen Erkrankungen
Göder, R., Weinhold, S. L., Drews, H. J., & Baier, P. C. (2017) · Somnologie - Schlafforschung und Schlafmedizin · doi:10.1007/s11818-017-0141-5
Effects of Social Isolation and Loneliness on Social Perception
Hieber, L. L. (2015)
Esipov, A. V., Samushiya, M. A., Ivolgin, A. F., Kozachuk, A. Y., Elina, I. A., Eremitsky, I. V., Kochereva, E. D., & Koveshnikov, M. A. (2025) · S S Korsakov Journal of Neurology and Psychiatry · doi:10.17116/jnevro202512506137
Zhu, Z. H., Wu, Y. M., Wang, J. J., Zhang, L. W., Yin, X. Y., Jia, N. N., Zhu, H. H., Cai, Y., Hou, W. L., Yu, X., et al. (2026) · BMC Psychiatry · doi:10.1186/s12888-026-07791-x
Dodell‐Feder, D., Gibbs, K., Silverstein, S. M., & Tamir, D. (2026) · Perspectives on Psychological Science · doi:10.1177/17456916261479653
- Authors
- Tan, H.-Y., Ang, Y.-G., Tan, H.-Y., & Ang, Y.-G.
- Venue
- Australian & New Zealand Journal of Psychiatry
- Publisher
- SAGE Publications
- Published
- 2001-08
- Volume
- 35
- Issue
- 4
- Pages
- 512-519
- ISSN
- 0004-8674 (ISSN-L)
- 1440-1614
- OpenAlex
- W2124238472
- Cited by
- 80
- References
- 39
- Citations by year
- 2026: 3 · 2025: 5 · 2024: 4 · 2023: 2 · 2022: 3 · 2021: 6 · 2020: 3 · 2019: 5 · 2018: 1 · 2017: 3 · 2016: 4 · 2015: 6 · 2014: 5 · 2013: 4
- FWCI
- 1.50
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Australian & New Zealand Journal of Psychiatry (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Health Sciences › Medicine › Psychiatry and Mental health › Schizophrenia research and treatment
- Health Sciences › Medicine › Psychiatry and Mental health › Bipolar Disorder and Treatment
- Social Sciences › Psychology › Clinical Psychology › Psychopathy, Forensic Psychiatry, Sexual Offending
- Keywords
- first-episode psychosis, prodromal symptoms, military personnel, social withdrawal, cognitive disorders, negative symptoms, young adults, non-psychotic mental disorders
- MeSH terms
- Adult, Cognition Disorders, Humans, Male, Memory Disorders, Military Personnel, Psychiatric Status Rating Scales, Psychotic Disorders, Severity of Illness Index, Social Alienation, Incidence
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