Depression is the leading cause of disability worldwide, yet fewer than half of people experiencing it ever receive a formal diagnosis — a gap that reflects both the complexity of the diagnostic process and the persistent stigma that keeps people from seeking evaluation in the first place (Mayo Clinic). Understanding how depression is clinically assessed can reduce some of the uncertainty that surrounds getting help. At Awakenings by Northwest Ohio Ketamine in Toledo, we work with patients across the depression spectrum, with particular focus on those who have already received a diagnosis and are not getting adequate relief from standard treatments.
What Depression Is — and What It Isn’t
Major depressive disorder (MDD) is a clinical diagnosis — not a personality type, a response to adversity, or a sign of insufficient effort. According to the Mayo Clinic, depression is characterized by persistent low mood, loss of interest or pleasure in activities that were previously enjoyable, and a range of associated symptoms that impair daily functioning. The key distinction between clinical depression and ordinary sadness or grief is duration, severity, and functional impact. Feeling low after a loss is a normal human response. A depressive episode that persists for weeks, affects sleep, appetite, concentration, and the ability to work or maintain relationships, and does not resolve with time or support is something categorically different.
Depression also presents differently across individuals, which is part of what makes it challenging to diagnose. The classical picture — persistent sadness, tearfulness, withdrawal — is not how every depressed person presents. Some people with depression experience primarily physical symptoms: chronic fatigue, persistent headaches, gastrointestinal problems, or diffuse pain. Others present with irritability and agitation rather than overt sadness. Men, in particular, are more likely to present with atypical symptoms including anger, risk-taking behavior, or substance use, which can lead providers away from a depression diagnosis.
The Clinical Diagnostic Process
There is no blood test for depression. No brain scan produces a definitive result. Depression is diagnosed through clinical assessment — a structured process in which a qualified provider evaluates symptoms, their duration and severity, and their impact on functioning.
The standard framework used in the United States is the Diagnostic and Statistical Manual of Mental Disorders (DSM), which defines a major depressive episode as a period of at least two weeks during which a person experiences five or more specified symptoms, including depressed mood or loss of interest as one of them. The full symptom list includes changes in sleep, appetite, energy, concentration, psychomotor function (meaning the speed and quality of movement and thought), feelings of worthlessness or excessive guilt, and recurrent thoughts of death or suicide (Mayo Clinic). For a diagnosis to be made, these symptoms must represent a change from previous functioning, must cause significant distress or impairment, and must not be better explained by another medical condition or substance.
A thorough evaluation for depression includes a detailed symptom history — not just what you are experiencing now, but the full timeline of episodes, prior treatment attempts, and how you have responded. It also includes screening for conditions that can mimic or contribute to depression, including thyroid dysfunction, anemia, sleep apnea, and chronic pain. The relationship between chronic pain and depression is bidirectional and well-documented: persistent pain significantly increases the risk of developing depression, and depression intensifies the subjective experience of pain. Evaluating both dimensions together produces a more complete clinical picture.
Screening for bipolar disorder is another critical component of a thorough depression evaluation. Standard antidepressants can trigger manic episodes in patients with undiagnosed bipolar disorder, making accurate diagnosis essential before any treatment is recommended. The National Institute of Mental Health notes that misdiagnosis of bipolar disorder as unipolar depression is a recognized clinical problem, and its consequences can include years of treatment that is not only ineffective but potentially destabilizing.
What Happens After a Diagnosis
A depression diagnosis is the beginning of a treatment process, not the endpoint. First-line treatment typically involves a combination of psychotherapy — particularly cognitive-behavioral therapy, which targets the thought patterns that sustain depression — and antidepressant medication, usually starting with an SSRI (selective serotonin reuptake inhibitor, a medication that increases serotonin availability in the brain) or SNRI (serotonin-norepinephrine reuptake inhibitor).
For many patients, this combination produces meaningful improvement. Research on antidepressant efficacy in treatment-resistant major depression shows, however, that a significant subset of patients do not respond adequately to initial medication trials. Treatment-resistant depression (TRD) is generally defined as inadequate response to at least two antidepressant medications at appropriate doses and duration.
When a patient reaches that threshold, the question shifts from which standard medication to try next to whether a fundamentally different treatment approach is warranted. The National Institute of Mental Health highlighted research in 2024 supporting ketamine as a rapid-acting treatment option for patients who have not responded to standard care — a development that reflects a broader shift in how the field understands treatment-resistant depression. IV ketamine works through the glutamate system rather than the serotonin or norepinephrine systems targeted by standard antidepressants, which means its mechanism of action is distinct from anything in the standard antidepressant class.
What We Look For at Awakenings
At Awakenings, our evaluation process begins with a free initial consultation. We review your full depression history — not just your current symptoms, but the complete arc of what you have experienced, what you have tried, and how you have responded. Dr. William James, our founder and director, brings deep expertise in ketamine therapy. Ben Wagner, PMHNP-BC, our board-certified Psychiatric Mental Health Nurse Practitioner, has seven years of clinical experience including work in community mental health, inpatient behavioral health, and ketamine-assisted therapy. Together, our team is positioned to evaluate whether IV ketamine infusion therapy may be appropriate for your specific history.
We also look for factors that may affect treatment response — medication interactions, medical conditions that can sustain depressive symptoms, and any features of your presentation that suggest a more complex picture than straightforward MDD. Our goal is to understand why standard treatment has not worked before recommending a next step, not to proceed to treatment without a thorough clinical rationale.
Results vary by individual. IV ketamine is not appropriate for every patient with depression, and certain psychiatric and medical histories affect candidacy. We are transparent about this during the consultation process.
Two Barriers Worth Addressing Directly
Stigma remains one of the most concrete obstacles to depression diagnosis and treatment. Despite decades of public awareness efforts, many people still experience significant shame around having depression, seeking an evaluation, or disclosing a diagnosis to family or employers. This shame is not warranted — depression is a medical condition with measurable neurobiological correlates, not a personal failing — but its effects on treatment-seeking behavior are real. At Awakenings, we treat every patient who comes through our door with the same clinical seriousness and confidentiality we would apply to any medical condition.
The second barrier is cost. We do not accept insurance as a primary payer for IV ketamine infusions. However, some insurance plans will cover all or a portion of treatment as an out-of-network service, and we provide the documentation needed to support those claims. CareCredit financing is available for patients who need to manage the cost over time. Active and former military with a valid ID or DD-214, and first responders with a badge, receive a 25 percent discount. We walk through the full financial picture with every patient before any treatment commitment is made. You can find more answers to common questions on our Ketamine FAQs page.
Frequently Asked Questions
Can I diagnose myself with depression? Self-assessment tools — such as the PHQ-9, a standardized questionnaire used widely in primary care — can help identify symptoms and prompt a conversation with a provider, but they are not a substitute for clinical diagnosis. A provider evaluation is necessary to distinguish depression from other conditions with similar presentations, screen for bipolar disorder, and identify contributing medical factors before any treatment is recommended.
What’s the difference between depression and feeling sad? Clinical depression is defined by duration, severity, and functional impact. Ordinary sadness — even significant grief — typically lifts over time and does not impair functioning to the degree that major depressive disorder does. If low mood, loss of interest, or associated symptoms have persisted for more than two weeks and are affecting your ability to work, maintain relationships, or care for yourself, a clinical evaluation is warranted.
What if I’ve already been diagnosed but treatment isn’t working? That is specifically the population we work with at Awakenings. If you have received a depression diagnosis and have not found adequate relief from standard antidepressant treatment, you may meet criteria for treatment-resistant depression — and there are evidence-based options beyond the standard medication classes. A free consultation with our team is a good place to start that conversation.
Do I need a referral to be seen at Awakenings? No referral is required. We welcome documentation from your current providers, but you can contact us directly to schedule a free initial consultation. We serve patients across the Ohio and Michigan area.
Is ketamine only for the most severe depression cases? IV ketamine is specifically indicated for treatment-resistant cases — patients who have not responded adequately to standard treatments — rather than as a first-line option. It is not appropriate for everyone, and candidacy is determined through a thorough clinical evaluation. If you are early in the treatment process, we may recommend completing standard first-line trials before pursuing IV ketamine, and we will tell you that honestly during your consultation.
Key Takeaways
- Depression is a clinical diagnosis made through structured assessment of symptoms, duration, severity, and functional impact — there is no blood test or imaging study that confirms it.
- A thorough evaluation screens for contributing medical conditions, bipolar disorder features, and prior treatment history, all of which affect what treatment is appropriate.
- Treatment-resistant depression — inadequate response to at least two antidepressant trials at appropriate doses — affects a significant subset of patients and warrants a different treatment approach.
- IV ketamine works through the glutamate system rather than serotonin or norepinephrine, giving it a mechanistically distinct action from standard antidepressants; the National Institute of Mental Health highlighted its potential as a rapid-acting option for treatment-resistant depression.
- At Awakenings in Toledo, we offer free initial consultations for patients who have been diagnosed with depression and are not finding adequate relief from conventional treatment; results vary by individual.
If you have a depression diagnosis and standard treatment has not given you the relief you were hoping for, that experience is worth taking seriously rather than waiting out. At Awakenings by Northwest Ohio Ketamine in Toledo, our team will review your full history and give you a direct assessment of your options. Call us at 419-406-4263 or schedule a free consultation with our team today.
References
Mayo Clinic. Depression (major depressive disorder) — Symptoms and causes. https://www.mayoclinic.org/diseases-conditions/depression/symptoms-causes/syc-20356007
Research on antidepressant efficacy in treatment-resistant major depression. https://pubmed.ncbi.nlm.nih.gov/23982301/
National Institute of Mental Health. New Hope for Rapid-Acting Depression Treatment (2024). https://www.nimh.nih.gov/news/science-updates/2024/new-hope-for-rapid-acting-depression-treatment
Medical Disclaimer
The information in this blog is for educational purposes only and does not constitute medical advice. IV ketamine therapy for depression should only be considered under the supervision of a qualified medical provider familiar with your full medical and psychiatric history. Individual results vary. If you are experiencing a mental health crisis or thoughts of self-harm, please call or text 988 to reach the Suicide and Crisis Lifeline or go to your nearest emergency room.