Medical practitioners are confronted on a daily basis with decisions about patients’ capacity to consent to interventions. To address some of the pertinent issues with these assessments, the end -of-life decision-making capacity in a 72-year old lady with treatment resistant schizophrenia and terminal cancer will be discussed.

In the case discussed there were differences in opinion about the patients decision-making capacity. In light of this, the role of the treating clinician and importance of health-related values in capacity assessment are highlighted. It is recommended that the focus of these assessments can rather be on practical outcomes, especially when capacity issues arise. This implies that the decision-making capacity of the patient is only practically important when the treatment team is willing to proceed against the patient’s wishes. This shifts the focus from a potentially difficult assessment to the simpler question of whether the patient’s capacity will change the treatment approach.

Compared to the general population, people with serious mental illness have higher rates of physical illness and die at a younger age, but they do not commonly access palliative care services and are rarely engaged in end-of-life care discussions. Older people with serious mental illness can engage in advance care planning. Conversations about end -of-life care can occur without fear that a person’s psychiatric symptoms or related vulnerabilities will undermine the process. Clinicians are also advised to attend to any possible underlying issues, instead of focusing strictly on capacity. Routine documentation of end-of-life care preferences can support future decision making for family and clinicians at a time when patients are unable to express their decisions.

More research about palliative care and advance care planning for people with serious mental illness is needed. This is even more urgent in light of the COVID-2019 pandemic, as there are potential needs for rationing of health care in the context of scarce resources. Health services should consider recommendations that advanced care planning should be routinely implemented. These recommendations should not only focus on the general population and should include patients with serious mental illness.