RESUMO
Conceptual parity posits that both medical and mental illness are both simply illness, and thus should be considered as fundamentally the same, especially in health services and policy. Recent controversy over medical assistance in dying (MAID) highlights both the unequal treatment of physical and mental illnesses in end-of-life care and the need for more conceptual clarification of terminal mental illness. This article presents an argument for the necessary elements in terminal mental illness, the value of qualitative assessments, and important areas that require further research and clarity in order for terminal mental illness to be appropriately identified. Given current conceptual limitations, palliative psychiatry, and not MAID, is recommended in severely treatment-resistant cases of mental illness.