When Treatment Hasn't Worked — There Is a Reason

Many patients arrive at Evolution Medicine after years of trying. Different medications. Multiple therapists. Diagnoses that never quite fit. And still — not feeling like themselves.

If that describes your experience, you may be dealing with treatment-resistant depression: depression that has not meaningfully improved after adequate trials of standard treatment. It is more common than most people realize, and it is not a personal failure. It means the underlying causes of your symptoms have not yet been fully identified.

At Evolution Medicine, that investigation is where we begin.

What Treatment-Resistant Depression Actually Is

Treatment-resistant depression is typically defined as depression that has not responded to at least two standard antidepressant trials at adequate dose and duration. But that definition misses the more important clinical question: why hasn't it responded?

Depression is not a single condition with a single cause. It can be driven — or sustained — by factors that standard psychiatric evaluations rarely examine:

Chronic stress and nervous system dysregulation · Unresolved trauma · Gut microbiome imbalances and inflammation · Hormonal disruption (thyroid, cortisol, sex hormones) · Nutritional deficiencies · Substance use and addiction, including patterns patients may not connect to their mood · Sleep architecture dysfunction · Autoimmune and metabolic factors

When these root causes go unaddressed, even well-chosen medications provide only partial or temporary relief.

Why Standard Treatment Often Falls Short

Conventional psychiatry is designed to manage symptoms efficiently. Within an insurance-based model, that typically means symptom checklists, medication trials, and brief follow-up appointments — not root-cause investigation.

This is not a criticism of individual clinicians. It is a structural limitation. When the underlying biology driving your depression is not examined, the result is often:

Cycling through medications without resolution · Partial improvement that plateaus · Side effects that accumulate · A growing sense that nothing will work

If you have been through this cycle, the problem is not that you are treatment-resistant. It is that your treatment has not been comprehensive enough.

Our Approach — Root-Cause Psychiatry

Comprehensive Evaluation — We begin with a 60-minute psychiatric assessment that goes beyond symptoms — mapping your history, patterns, co-occurring conditions, and contributing biological factors. For more complex presentations, the evaluation may unfold across two to three appointments.

Comprehensive Testing — Standard and Functional — We investigate what standard care often misses: gut health, inflammation, hormonal balance, nutritional status, and metabolic function.

Personalized, Whole-Systems Treatment — Your plan is built around what we find — not a standard protocol. It integrates medication optimization, trauma-informed psychotherapy (including Eye Movement Desensitization and Reprocessing), nutritional medicine, and nervous system support, coordinated across our full clinical team. Where substance use or addiction is part of the picture — whether or not a patient identifies it as such — we treat that alongside depression, not separately.

Ongoing Iteration — We do not set a plan and step back. We adjust based on how you respond — biologically, psychologically, and functionally — over time.

What Makes Evolution Medicine Different

Dr. Sonya Lazarevic, MD, MS is double board-certified in General Psychiatry and Addiction Psychiatry — a distinction held by fewer than 5% of psychiatrists — with advanced training in integrative, nutritional, and regenerative medicine. Treatment-resistant and complex cases are her clinical focus.

Coordinated team care — When appropriate, your treatment may involve Dr. Shuki Cohen, PhD (trauma-informed psychotherapy, Eye Movement Desensitization and Reprocessing) and Helaine Polanco, MS (functional nutrition, gut-brain health) — working as a coordinated team, not parallel providers.

Time and attention — Initial evaluations are 60 minutes. Follow-up is substantive. This is the clinical standard most insurance-based practices cannot sustain.

Self-pay model — No insurance restrictions on testing, treatment duration, or clinical judgment. Your care is determined by your needs, not your plan.

Still evaluating? These pages may help:

Learn about our approach → How We Work

Meet Dr. Lazarevic and the team → Our Team

Explore coordinated care options → Momentum Care™ Packages

Have questions? Frequently Asked Questions