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Nonadherence with antipsychotic medication in schizophrenia: challenges and management strategies

Authors Haddad PM, Brain C, Scott J

Received 18 December 2013

Accepted for publication 26 February 2014

Published 23 June 2014 Volume 2014:5 Pages 43—62

DOI https://doi.org/10.2147/PROM.S42735

Checked for plagiarism Yes

Review by Single-blind

Peer reviewer comments 2

Peter M Haddad,1,2 Cecilia Brain,3,4 Jan Scott5,6

1Neuroscience and Psychiatry Unit, University of Manchester, Manchester, 2Greater Manchester West Mental Health NHS Foundation Trust, Salford, UK; 3Institute of Neuroscience and Physiology, Department of Psychiatry and Neurochemistry, Sahlgrenska Academy, University of Gothenburg, 4Nå Ut-teamet, Psychosis Clinic, Sahlgrenska University Hospital, Gothenburg, Sweden; 5Academic Psychiatry, Institute of Neuroscience, Newcastle University, 6Centre for Affective Disorders, Institute of Psychiatry, London, UK

Abstract: Nonadherence with medication occurs in all chronic medical disorders. It is a particular challenge in schizophrenia due to the illness's association with social isolation, stigma, and comorbid substance misuse, plus the effect of symptom domains on adherence, including positive and negative symptoms, lack of insight, depression, and cognitive impairment. Nonadherence lies on a spectrum, is often covert, and is underestimated by clinicians, but affects more than one third of patients with schizophrenia per annum. It increases the risk of relapse, rehospitalization, and self-harm, increases inpatient costs, and lowers quality of life. It results from multiple patient, clinician, illness, medication, and service factors, but a useful distinction is between intentional and unintentional nonadherence. There is no gold standard approach to the measurement of adherence as all methods have pros and cons. Interventions to improve adherence include psychoeducation and other psychosocial interventions, antipsychotic long-acting injections, electronic reminders, service-based interventions, and financial incentives. These overlap, all have some evidence of effectiveness, and the intervention adopted should be tailored to the individual. Psychosocial interventions that utilize combined approaches seem more effective than unidimensional approaches. There is increasing interest in electronic reminders and monitoring systems to enhance adherence, eg, Short Message Service text messaging and real-time medication monitoring linked to smart pill containers or an electronic ingestible event marker. Financial incentives to enhance antipsychotic adherence raise ethical issues, and their place in practice remains unclear. Simple pragmatic strategies to improve medication adherence include shared decision-making, regular assessment of adherence, simplification of the medication regimen, ensuring that treatment is effective and that side effects are managed, and promoting a positive therapeutic alliance and good communication between the clinician and patient. These elements remain essential for all patients, not least for the small minority where vulnerability and risk issue dictate that compulsory treatment is necessary to ensure adherence.

Keywords:
adherence, nonadherence, antipsychotics, schizophrenia, long-acting injections, relapse, risk factors

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