Treatment-resistant depression: when the medications have not worked
Depression is usually called treatment-resistant when it has not responded to two or more adequate medication trials. Roughly a third of people with depression reach that point. “Resistant” often means mis-targeted: the treatments tried may have acted on the same mechanism, at doses or durations that never had a fair chance, or on a depression whose real drivers were elsewhere.
Start by re-reading the history
Every failed trial is data: what was tried, at what dose, for how long, what changed and what side effects appeared. MindFirst Brain Map organizes that history into a receptor-level profile, so the next step is chosen for a reason rather than by rotation. We also look for what is often missed: bipolar spectrum features, sleep disorders, thyroid or hormonal factors, substance use, medication interactions, and personality patterns that keep a depression in place.
The options
Depending on the formulation: a different mechanism, augmentation strategies, lithium, esketamine or ketamine, and — through trusted colleagues — TMS or ECT. Psychotherapy remains essential. Sometimes the most useful step is removing medications that are no longer helping.
Dr. Bernardi's published work includes clinical research on transcranial magnetic stimulation for resistant depression and on augmentation strategies for patients with obsessive-compulsive disorder who respond only partially to serotonin reuptake inhibitors.
For more, see When medication hasn't worked and A second opinion that shows its work.
Questions
What is treatment-resistant depression?
Depression that has not improved after at least two adequate trials of antidepressant medication, meaning trials at an appropriate dose for an appropriate length of time.
What are the options after several antidepressants have failed?
Options include switching to a different mechanism, augmentation (for example with lithium or certain antipsychotics), esketamine or ketamine, TMS, and ECT, alongside psychotherapy. A careful review of past trials helps choose among them.
Should I get a second opinion before ketamine or ECT?
A second opinion is reasonable before any major intervention. Re-reading the full treatment history can reveal untested mechanisms, missed diagnoses, or inadequate past trials.
Related reading
MIND FIRST sees patients in Midtown Manhattan (Grand Central) and the Financial District, and by telehealth for patients located in New York, Florida or Milan. Dr. Bernardi is licensed to practice medicine in New York, Florida and Italy.
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