COVID-19 and patients with serious mental illness

Outpatients whose primary disorder is well controlled may, like anyone else, struggle with the effects of the pandemic. It is necessary to carefully differentiate non-specific symptoms associated with stress from the emergence of a new disorder resulting from stress.³² For some patients, grief or adjustment disorders should be considered. Prolonged stress and uncertainty may eventually lead to an exacerbation of a primary disorder, particularly if the situation (eg, financial loss) does not improve or worsens. Demoralization and suicidal thinking need to be monitored. Relapse or increased use of alcohol or other substances as a response to stress may also complicate the clinical picture.³³ Last, smoking cessation as a major treatment goal in general should be re-emphasized and not ignored during the ongoing pandemic.³⁴

Table 2 summarizes psychiatric symptoms that need to be considered when managing a patient with SMI during this pandemic.

Treatment tools

Psychopharmacology. Even though crisis-mode prescribing may be necessary, the safe use of psychotropics remains the goal of psychiatric prescribing. Access to medications becomes a larger consideration; for many patients, a 90-day supply may be indicated. Review of polypharmacy, including for pneumonia risk, should be undertaken. Preventing drooling (eg, from sedation, clozapine, extrapyramidal symptoms [EPS]) will decrease aspiration risk.

In general, treatment of psychiatric symptoms in a patient with COVID-19 follows usual guidelines. The best treatment for COVID-19 patients with delirium, however, remains to be established, particularly how to manage severe agitation.²⁸ Pharmacodynamic and pharmacokinetic drug–drug interactions between psychotropics and antiviral treatments for COVID-19 (eg, QTc prolongation) can be expected and need to be reviewed.³⁵ For stress-related anxiety, judicious pharmacotherapy can be helpful. Diazepam given at the earliest signs of a psychotic relapse may stave off a relapse for patients with schizophrenia.³⁶ Even if permitted under relaxed prescribing rules during a public-health emergency, prescribing controlled substances without seeing patients in person requires additional thought. In some cases, adjusting the primary medication to buffer against stress may be preferred (eg, adjusting an antipsychotic in a patient on maintenance treatment for schizophrenia, particularly if a low-dose strategy is pursued).

Clozapine requires registry-based prescribing and bloodwork (“no blood, no drug”). The use of clozapine during this public-health emergency has been made easier because of FDA guidance that allows clozapine to be dispensed without blood work if obtaining blood work is not possible (eg, a patient is quarantined) or can be accomplished only at substantial risk to patients and the population at large. Under certain conditions, clozapine can be dispensed safely and in a way that is consistent with infection prevention. Clozapine-treated patients admitted with COVID-19 should be monitored for clozapine toxicity and the clozapine dose adjusted.³⁷ A consensus statement consistent with the FDA and clinical considerations for using clozapine during COVID-19 is summarized in Table 3.³⁸

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