How the WHO actually defines burnout
If you have searched for help with burnout, you have probably been treated as if it were a clinical diagnosis. It is not. The World Health Organization, in its ICD-11 (2019), classifies burnout under code QD85 as an “occupational phenomenon.” The WHO is explicit that burnout is “not classified as a medical condition” and that the term should be applied only in the occupational context, not to describe experiences in other areas of life.
The WHO definition has three dimensions: feelings of energy depletion or exhaustion, increased mental distance from one’s job (or feelings of negativism and cynicism toward it), and reduced professional efficacy. That is the entire description. There is no symptom checklist with severity scores, no required duration, no recommended treatment protocol. It is a label for a workplace state, not a clinical disease.
The American Psychiatric Association takes this further. The DSM-5-TR (2022), the standard reference for U.S. clinicians, does not list burnout as a diagnosis. The APA’s guidance is that clinicians evaluating someone presenting with “burnout” should screen for major depressive disorder, generalized anxiety disorder, and adjustment disorder, because those are the conditions that can be diagnosed and treated.
This matters for one practical reason. If you walk into our clinic and say “I have burnout, can ketamine help,” the truthful answer is: ketamine has no evidence base for burnout as defined by the WHO, because burnout is not a medical condition. What ketamine does have evidence for is the depression and anxiety that often hide underneath the word.
Where burnout, depression, and anxiety overlap
The reason “burnout” is such a popular description is that it captures something real. People are exhausted, demoralized, and cynical about work. But research consistently shows that a significant subset of people who self-describe as burned out actually meet diagnostic criteria for major depressive disorder, generalized anxiety disorder, or both.
The overlap is not a coincidence. Chronic occupational stress is a well-established risk factor for depression and anxiety. Sleep disruption, loss of interest in activities, fatigue, irritability, difficulty concentrating, and feelings of worthlessness all appear on both the “burnout” description and the DSM-5-TR criteria for MDD. The clinical question is which framework better explains what you are experiencing.
Some useful distinctions, drawn from the occupational health literature:
- Context dependence. Burnout, in the WHO sense, is tied to the work context. Symptoms ease meaningfully on long vacations, sabbaticals, or after leaving the job. Major depression usually does not fully lift in those windows.
- Anhedonia outside of work. If you no longer enjoy things that have nothing to do with your job—hobbies, relationships, music, food—that pattern is more consistent with a depressive episode than with occupational burnout.
- Hopelessness and worthlessness. Persistent thoughts that you are a failure as a person, or that nothing will ever get better, are core features of MDD, not core features of burnout.
- Anxiety symptoms. Persistent worry, racing thoughts, physical tension, and panic episodes that continue away from work suggest an anxiety disorder rather than pure burnout.
None of this is meant as a self-diagnostic tool. It is meant to clarify why honest framing matters. If your situation is purely occupational, the right interventions are environmental: a different role, real recovery time, workload negotiation, therapy focused on values and limits. If a clinical mood or anxiety disorder is present underneath, that needs a clinical workup and treatment.
What ketamine evidence applies — and what doesn't
Ketamine is FDA-approved as an anesthetic. Its use for depression, anxiety, and any other psychiatric or pain condition is off-label. Spravato (esketamine), a related but distinct nasal-spray product, is FDA-approved for treatment-resistant depression and for major depression with acute suicidal ideation. With that framing in place, here is what the evidence actually supports.
For treatment-resistant depression, the evidence is the strongest. Murrough and colleagues (2013), in the American Journal of Psychiatry, conducted a randomized controlled trial comparing single-dose IV ketamine against the active control midazolam in patients with TRD. The 24-hour response rate was 64% in the ketamine group versus 28% in the midazolam group. This study, along with replications since, anchors the modern evidence base for ketamine in depression.
For anxiety, the data is younger but consistent. Glue and colleagues (2017), in the Journal of Psychopharmacology, studied ketamine in patients with treatment-refractory generalized anxiety and social anxiety disorders. The trial reported rapid and large reductions in anxiety symptoms following ascending ketamine doses, with dose-dependent improvements that lasted up to a week after a single session.
The mechanism behind both effects is well characterized. Ketamine is an NMDA receptor antagonist that triggers a downstream surge in glutamate signaling, BDNF expression, and synaptic plasticity. This neuroplastic window is what appears to underlie the rapid antidepressant and anxiolytic effects, and it is fundamentally different from how SSRIs work.
What ketamine does not have meaningful evidence for is “burnout” as a freestanding entity. There is no published RCT of ketamine in WHO-defined burnout absent a comorbid mood or anxiety disorder, because burnout is not a medical diagnosis to begin with. When you see ketamine described as a “burnout treatment” online, what is being treated is almost always the depression or anxiety that overlaps with the burnout picture, not the occupational phenomenon itself.
Signs your 'burnout' may actually be MDD
This list is not a substitute for clinical evaluation. It is a prompt to seek one.
- Symptoms persist on weekends and vacations. True occupational burnout typically eases when the workload eases. Persistent low mood, hopelessness, or anhedonia during real time off is a flag for MDD.
- Loss of interest extends beyond work. Anhedonia in your personal life—food, sex, hobbies, friendships—points away from pure burnout and toward a depressive episode.
- Sleep architecture is disrupted, not just shortened. Early morning awakening with inability to return to sleep is more characteristic of depression than of overwork.
- Worthlessness or excessive guilt. A sense of being fundamentally bad or broken as a person, distinct from frustration with your job, is a depressive feature.
- Thoughts of death or self-harm. Any passive or active suicidal thinking warrants immediate clinical evaluation, full stop. This is not a burnout symptom; this is a medical emergency.
- Symptoms have lasted more than two weeks consistently. The DSM-5-TR threshold for an MDD episode is two weeks of nearly daily symptoms. If you are well past that, you owe yourself a real evaluation.
If several of these describe you, please talk with a primary care physician, psychiatrist, or therapist. We can be part of that conversation, but we are not the first stop, and we are not a substitute for a diagnostic workup.
Why time off alone isn't always enough
The conventional wisdom for burnout is to take time off, and for some people, that is genuinely the answer. A real vacation, a sabbatical, a job change—these can resolve a pure occupational burnout picture. We have seen it.
But when there is a depressive or anxious component layered into the burnout, time off often falls short. A common pattern: someone takes two weeks away from work, expects to come back recharged, and finds themselves still exhausted, still hopeless, still flat. The inability to recover during recovery time is itself a clinical signal. The brain has shifted into a state that rest alone does not undo.
This is where the glutamate-system effects of ketamine become relevant. SSRIs, the standard first-line for depression, take four to eight weeks to reach effect and produce response in roughly half of treated patients. For people who have already cycled through one or two antidepressants without adequate response, the Murrough trial and the broader TRD literature suggest ketamine can produce meaningful improvement within 24 hours and across a series of infusions. That timing matters when someone has a job, a family, and a life that cannot be paused for two months while a new SSRI is titrated.
For first responders, physicians, military, and others in high-stress professional roles, this faster onset can be the difference between staying functional and stepping away from work entirely. The shift in sleep, mood, and engagement that many patients report can give them enough room to do the rest of the work—therapy, lifestyle changes, role adjustments—that lasting recovery actually requires.
What a typical professional sees in 4–6 sessions
The standard induction protocol for depression at our clinic, as in most ketamine clinics, is six infusions over two to three weeks. Patients with a clear depressive picture and a clean medical history tend to follow a recognizable arc, though we are careful not to promise outcomes.
What patients commonly describe across a series:
- After the first session, a feeling of mental quiet that lasts hours to a few days. Some patients sleep deeply for the first time in months. The first infusion is not the destination; it is a baseline check.
- After two to three sessions, a more durable lift in mood, an easier time getting out of bed, and a return of small reactions—laughter, appetite, interest in things that had gone gray.
- After four to six sessions, for responders, the depressive baseline shifts. Sleep stabilizes. Cynicism softens. Decisions about work, relationships, and direction that felt impossibly heavy start to feel workable.
None of this is a given. Research suggests roughly half to two-thirds of TRD patients respond to a ketamine series, and the magnitude of response varies widely. Studies indicate that a minority of patients see no meaningful benefit. We tell every prospective patient this directly during consultation.
At Music City Ketamine, Marla Peterson, CRNA, is the anesthesia provider in the room and oversees every infusion, providing anesthesia-level monitoring throughout each session—continuous pulse oximetry, blood pressure, and heart rate tracking. She is available throughout your visit. We treat ketamine the way it deserves to be treated: as a medication that requires a CRNA-led monitoring standard, not a wellness afterthought.
When we say 'this isn't the right tool'
We turn people away. Not often, but enough that it is worth being explicit.
- Pure occupational burnout with no depressive or anxiety component. If the honest reading is “your job is the problem and you feel fine on weekends,” then ketamine is not the answer. Career counseling, therapy, role change, and real boundaries are the answer. We will tell you that.
- Active substance misuse without a clear treatment plan. Ketamine is a controlled substance, and the safety profile depends on careful screening.
- Uncontrolled cardiovascular disease, severe untreated hypertension, or a history of psychosis or schizophrenia. These are standard contraindications and we adhere to them.
- Pregnancy. Off-label psychiatric ketamine is not appropriate during pregnancy and requires deferral to your OB-GYN and prescribing clinicians.
- Expectations that ketamine will fix a job, a marriage, or a circumstance. Ketamine works on the brain. It does not work on a calendar.
We also remind everyone of the off-label disclosure: ketamine is FDA-approved as an anesthetic, and its use for depression, anxiety, or any psychiatric or pain condition is off-label. Insurance typically does not cover off-label ketamine, and our sessions are $475 each. We are transparent about this from the first call, because asking someone to pay several thousand dollars for a series demands honesty, not a sales pitch.
If you are wondering whether what you are calling burnout is really depression or an anxiety disorder, the most useful next step is a clinical conversation. Whether that ends with you in our infusion suite or somewhere else entirely, that is the right question to start with.