Treatment-resistant depression (TRD) is diagnosed when major depressive disorder does not improve after at least two different antidepressants, each taken at the right dose for an adequate duration. Up to one third of people with depression experience a treatment-resistant course, so if this is your experience, you are far from alone, and importantly, you are not out of options.

Living with TRD is exhausting and demoralising. Each new medication carries hope, and each disappointment compounds the last. The burden is real and measurable: research shows TRD is associated with up to seven times the risk of suicide or self-harm, longer and more intense depressive episodes, greater likelihood of physical illness and substance use, more hospitalisations and emergency presentations, reduced capacity for work and study, and a heavy toll on families and carers. This is precisely why TRD needs specialised care rather than another round of the same approach.

Why standard treatments sometimes fail

Conventional antidepressants work primarily on the brain's serotonin and noradrenaline systems. For a substantial group of people, depression involves mechanisms these medications do not adequately reach. The encouraging news is that modern treatments target entirely different pathways, which is why they can succeed where multiple medications have failed.

Specialist treatments at Mind Connections

Mind Connections is one of the few services in Sydney offering both of the leading evidence-based treatments for TRD under one roof, at both Carlingford and Norwest:

• MRI-guided TMS (rTMS): non-invasive magnetic stimulation of mood-regulating brain circuits, delivered in short sessions over four to six weeks, with Medicare rebates for eligible patients. Many patients notice improvement within the first week, and most experience substantial improvement by the end of a course.
• Esketamine nasal spray (Spravato): a PBS-listed treatment that works on the brain's NMDA receptors, capable of producing rapid improvement, sometimes within hours to days, delivered in clinic under psychiatric supervision at our accredited treatment centres.

The right option depends on your history, preferences and circumstances, and some patients benefit from each at different times. A comprehensive psychiatric review of your diagnosis and full treatment history is the essential first step, and where your presentation is complex, a second opinion may be recommended to make sure nothing has been missed.

Reviewing the diagnosis

Part of specialist TRD care is asking careful questions. Is the diagnosis right? Is there an unrecognised bipolar pattern, a thyroid or other medical contributor, untreated sleep apnoea, ADHD, or trauma maintaining the depression? Sometimes treatment resistance resolves when an overlooked factor is found and addressed. Psychiatrists consulting at Mind Connections approach every TRD referral with fresh eyes.