When Doing Nothing Feels Safer: A Multilevel Framework for Therapeutic Inertia in Psychiatry

Therapeutic inertia has been extensively examined in chronic medical conditions but remains insufficiently conceptualized and empirically studied in psychiatry. This structured narrative review examines therapeutic inertia as a multilevel and potentially bidirectional phenomenon arising when clinically relevant care is not reconsidered or modified despite unmet therapeutic goals and the availability of a reasonable and feasible alternative. A targeted PubMed search was supplemented by backward and forward citation searching, prioritizing psychiatric evidence and foundational literature on clinical decision-making under uncertainty. The review distinguishes therapeutic inertia from appropriate caution, watchful waiting, informed refusal, structural non-access, therapeutic nihilism, medical futility, therapeutic obstinacy, and evidence-based deprescribing. Potential determinants include cognitive and emotional mechanisms, diagnostic and prognostic uncertainty, adverse-effect concerns, patient preferences and previous experiences, therapeutic relationships, resource constraints, fragmented care, guideline structures, workload, and medicolegal culture. Clozapine underutilization in treatment-resistant schizophrenia represents the most compelling psychiatric example, while direct but more limited evidence is available in major depressive and bipolar disorders; applications to anxiety, obsessive-compulsive, substance-use, and non-pharmacological care remain largely hypothesis-generating. Strategies include explicit therapeutic goals, planned reassessment, measurement-based and guideline-informed care, shared decision-making, multidisciplinary review, improved access, clinical decision support, and audit and feedback. Future research should use operational definitions, experimental and observational designs, patient-centered outcomes, and real-world data to determine when treatment non-modification is inappropriate and whether corrective interventions improve care without promoting indiscriminate escalation, coercion, polypharmacy, or premature discontinuation.