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Vol 22, No 3
Table of Contents

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<p class="frontmatter-fieldnotes disclaimernew" style="margin-bottom:15px;">This work may not be copied, distributed, displayed, published, reproduced, transmitted, modified, posted, sold, licensed, or used for commercial purposes. By downloading this file, you are agreeing to the publisher’s <a href="/pages/termsofuse.aspx" target="_blank">Terms & Conditions</a>.</p> <div>
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<p class="title-left"><span class="bold">The Risks of Prescribing Hydroxychloroquine in COVID-19–Infected Patients With Schizophrenia</span></p>
<p class="byline-regular">N. A. Uvais, MBBS, DPM<span class="superscript">a,</span><span class="asterisk">*</span></p>
<p class="drop-cap-with-body-text"><span class="bold-14pt-for-cap"><span class="bold">I</span></span>n the desperate attempt to find effective treatments for coronavirus disease 2019 (COVID-19), the antimalarial drugs hydroxychloroquine and chloroquine have recently entered the spotlight due to their antiviral activity against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2).<span class="htm-cite"><a href="#ref1">1</a></span> Although current data supporting the use of hydroxychloroquine and chloroquine for COVID-19 are limited and inconclusive, these drugs are recommended for treatment of hospitalized COVID-19 patients in several countries including the United States. Moreover, the US Food and Drug Administration has designated hydroxychloroquine for off-label, compassionate use in the treatment of COVID-19 patients.<span class="htm-cite"><a href="#ref2">2</a></span></p>
<p class="body-text">Schizophrenia is a chronic and debilitating psychiatric illness that affects 1% of the population in all cultures.<span class="htm-cite"><a href="#ref3">3</a></span> Patients with schizophrenia may be much more susceptible to COVID-19 infection for multiple reasons. Research has shown that patients with schizophrenia have a higher risk of physical illness including pneumonia and are reported to have poorer treatment outcomes due to lack of proper health care, unequal access to physical health care resources, and increased risk of complications.<span class="htm-cite"><a href="#ref4">4</a></span> Moreover, due to cognitive and social impairment, they may not have a thorough understanding about the risk of COVID-19 infection and may not properly practice disinfection and social distancing.<span class="htm-cite"><a href="#ref5">5</a></span> Furthermore, inpatients in psychiatric hospitals are at higher risk of infection due to the confined conditions.<span class="htm-cite"><a href="#ref5">5</a></span></p>
<p class="body-text">When infected with COVID-19, patients with schizophrenia may have more severe symptoms compared to others, as a significant proportion are heavy smokers and have at least 1 medical comorbidity, which has already been associated with severity of COVID-19 infection.<span class="htm-cite"><a href="#ref6">6</a></span> In such a scenario, many of these individuals will need hospitalization and medications including hydroxychloroquine.</p>
<p class="body-text">Prescribing of hydroxychloroquine in patients with schizophrenia could be a challenging clinical situation. Hydroxychloroquine is known to cause a spectrum of psychiatric adverse effects, including agitation, depression, mania, confusion, insomnia, hallucinations, catatonia, and suicidal ideation.<span class="htm-cite"><a href="#ref7">7</a></span> Hypoglycemia, idiosyncratic hypersensitivity reactions, and drug-drug interactions have also been reported with hydroxychloroquine use, and many of these adverse effects can be dose related.<span class="htm-cite"><a href="#ref7">7</a></span> There are also multiple reports of psychosis induced by hydroxychloroquine in patients with no past history of psychosis.<span class="htm-cite"><a href="#ref7">7</a></span> Patients with schizophrenia can have exacerbations of psychotic symptoms during hydroxychloroquine therapy. Moreover, most patients with schizophrenia are on long-term antipsychotic medications, many of which carry the risk of QTc interval prolongation, and in combination with hydroxychloroquine could theoretically increase the risk of torsades de pointes.<span class="htm-cite"><a href="#ref8">8</a></span> Furthermore, adding azithromycin as recommended by various countries including the United States will compound this risk. Considering the current weak evidence base for use of hydroxychloroquine in the treatment of COVID-19 infection and the significant risk of psychotic exacerbation and QTc prolongation, it would be prudent to avoid hydroxychloroquine in patients with schizophrenia. When the situation demands its use, the treating physician should collaborate with the treating psychiatrist to closely monitor for any exacerbations in psychiatric symptoms and should minimize cardiac risk by switching antipsychotic medication with a high risk of QTc prolongation to a safer agent.</p>
<p class="end-matter"><span class="bold-italic">Received:</span> April 14, 2020.</p>
<p class="end-matter"><span class="bold-italic">Published online:</span> April 30, 2020.</p>
<p class="end-matter"><span class="bold-italic">Potential conflicts of interest:</span> None.</p>
<p class="end-matter"><span class="bold-italic">Funding/support:</span> None.</p>
<p class="references_references-heading"><span class="bold">REFERENCES</span></p>
<p class="references-references-text-1-9"><a name="ref1"></a><span class="htm-ref"> 1. </span>Yazdany J, Kim AHJ. Use of hydroxychloroquine and chloroquine during the COVID-19 pandemic: what every clinician should know [published online ahead of print March 31, 2020]. <span class="italic">Ann Intern Med</span>. <a href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=32232419&dopt=Abstract" target="_blank"><span class="pubmed-crossref">PubMed</span></a> <a href="https://doi.org/10.7326/M20-1334" target="_blank"><span class="pubmed-crossref">CrossRef</span></a></p>
<p class="references-references-text-1-9"><a name="ref2"></a><span class="htm-ref"> 2. </span>Owens B. Excitement around hydroxychloroquine for treating COVID-19 causes challenges for rheumatology [published online ahead of print April 1, 2020]. <span class="italic">Lancet Rheumatology</span>. 2020. <a href="https://doi.org/10.1016/S2665-9913(20)30089-8" target="_blank"><span class="pubmed-crossref">CrossRef</span></a></p>
<p class="references-references-text-1-9"><a name="ref3"></a><span class="htm-ref"> 3. </span>Karam CS, Ballon JS, Bivens NM, et al. Signaling pathways in schizophrenia: emerging targets and therapeutic strategies. <span class="italic">Trends Pharmacol Sci.</span> 2010;31(8):381–390. <a href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=20579747&dopt=Abstract" target="_blank"><span class="pubmed-crossref">PubMed</span></a> <a href="https://doi.org/10.1016/j.tips.2010.05.004" target="_blank"><span class="pubmed-crossref">CrossRef</span></a></p>
<p class="references-references-text-1-9"><a name="ref4"></a><span class="htm-ref"> 4. </span>Haga T, Ito K, Sakashita K, et al. Risk factors for pneumonia in patients with schizophrenia. <span class="italic">Neuropsychopharmacol Rep</span>. 2018;38(4):204–209. <a href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=30353691&dopt=Abstract" target="_blank"><span class="pubmed-crossref">PubMed</span></a> <a href="https://doi.org/10.1002/npr2.12034" target="_blank"><span class="pubmed-crossref">CrossRef</span></a></p>
<p class="references-references-text-1-9"><a name="ref5"></a><span class="htm-ref"> 5. </span>Yao H, Chen JH, Xu YF. Patients with mental health disorders in the COVID-19 epidemic. <span class="italic">Lancet Psychiatry</span>. 2020;7(4):e21. <a href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=32199510&dopt=Abstract" target="_blank"><span class="pubmed-crossref">PubMed</span></a> <a href="https://doi.org/10.1016/S2215-0366(20)30090-0" target="_blank"><span class="pubmed-crossref">CrossRef</span></a></p>
<p class="references-references-text-1-9"><a name="ref6"></a><span class="htm-ref"> 6. </span>Fonseca L, Diniz E, Mendonça G, et al. Schizophrenia and COVID-19: risks and recommendations [published online ahead of print April 9, 2020]. <span class="italic">Br J Psychiatry</span>. <a href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=32294689&dopt=Abstract" target="_blank"><span class="pubmed-crossref">PubMed</span></a> <a href="https://doi.org/10.1590/1516-4446-2020-0010" target="_blank"><span class="pubmed-crossref">CrossRef</span></a></p>
<p class="references-references-text-1-9"><a name="ref7"></a><span class="htm-ref"> 7. </span>Juurlink DN. Safety considerations with chloroquine, hydroxychloroquine and azithromycin in the management of SARS-CoV-2 infection [published online ahead of print]. <span class="italic">CMAJ</span>. <a href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=32269021&dopt=Abstract" target="_blank"><span class="pubmed-crossref">PubMed</span></a> <a href="https://doi.org/10.1503/cmaj.200528" target="_blank"><span class="pubmed-crossref">CrossRef</span></a></p>
<p class="references-references-text-1-9"><a name="ref8"></a><span class="htm-ref"> 8. </span>Vieweg WV. New generation antipsychotic drugs and QTc interval prolongation. <span class="italic">Prim Care Companion J Clin Psychiatry</span>. 2003;5(5):205–215. <a href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=15213787&dopt=Abstract" target="_blank"><span class="pubmed-crossref">PubMed</span></a> <a href="https://doi.org/10.4088/PCC.v05n0504" target="_blank"><span class="pubmed-crossref">CrossRef</span></a></p><div id="affilDiv"></div>
<p class="front-matter-rule"><span class="superscript">a</span>Department of Psychiatry, Iqraa International Hospital and Research Centre, Calicut, Kerala, India</p>
<p class="front-matter"><span class="asterisk">*</span><span class="italic">Corresponding author:</span> N. A. Uvais, MBBS, DPM, Iqraa International Hospital and Research Centre, Calicut, Kerala, India <span class="hyperlink">(<a href="mailto:druvaisna@gmail.com">druvaisna@gmail.com</a>)</span>. </p>
<p class="front-matter"><span class="italic">Prim Care Companion CNS Disord 2020;22(3):20com02635</span></p>
<p class="front-matter-rule"><span class="bold-italic">To cite:</span> Uvais NA. The risks of prescribing hydroxychloroquine in COVID-19–infected patients with schizophrenia. <span class="italic">Prim Care Companion CNS Disord</span>. 2020;22(3):20com02635.</p>
<p class="doi-line"><span class="bold-italic">To share:</span> https://doi.org/<span class="doi">10.4088/PCC.20com02635</span></p>
<p class="front-matter"><span class="italic">© Copyright 2020 Physicians Postgraduate Press, Inc.</span></p>
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