Depression – Treatment Resistant
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When I first heard of Transcranial Magnetic Stimulation (TMS), I must admit, I was a bit sceptical. I struggled to believe that a giant magnet held to your head could help patients struggling with Treatment Resistant Depression.
But, as study after study came in, with extremely positive results in traditionally hard to treat patients, I became increasingly frustrated. Why wasn’t TMS treatment available to my patients, here in Cape Town?
Depression is a horrible illness that robs people of their joy, their ability to connect, their ability to function. Antidepressants came out in the 50’s and have saved millions of lives. Today we have several classes of antidepressant drugs, and a lot of the challenge and joy I have of being a psychiatrist is matching the patient up to the right treatment.
Thankfully, most of my patients do get better.
But there are some who continue to struggle. Even after I have tried various drugs, or combinations of drugs. Even after my patient valiantly started exercising and engaged in psychotherapy. My heart breaks to see how hope starts waning as the sense of healthy self drifts away.
WHAT IS TREATMENT RESISTANCE?Back to top
These patients are known as hard to treat or even treatment resistant. The prognosis becomes progressively bleaker the more medications we throw at the problem. The reality is, there is about 30% of patients who fail to respond, or only partially respond to treatment.
For these patients, I have to resort to ECT (Electro Convulsive Therapy). ECT comes at the problem from a different angle. Instead of only working on neurotransmitters, like medication does, it works on the “circuitry” of the brain. The electrics of the machine as opposed to the petrol, for want of a simplistic analogy.
BRAIN CIRCUITRYBack to top
I like ECT, it works. It often “reboots” the brain and allows healing to start happening. As an added bonus, BDNF (brain derived neurotrophic factor) is also released. BDNF is a growth hormone which allows nerves to grow, something sorely needed in a brain which has been ill for some time.
But ECT does have its drawbacks. It needs anaesthetics to administer, which comes with its own risks. It often has accompanying memory loss, confusion and body pains. Patients mostly need to be hospitalised to receive it.
THE START OF TMSBack to top
Then in 1985, some clever folk wondered if they can influence the circuitry of the brain with electromagnets. It turns out they can. The last 30 years have delivered great results in using TMS to treat Treatment Resistant Depression, Anxiety, OCD, Tinnitus, Chronic pain. There are even very promising results for Substance Abuse Disorders.
It is a non-invasive way to reboot the circuitry of the brain.
HOW DOES TMS WORK?Back to top
It also releases BDNF. Which means the brain is growing and healing. A brain awash with BDNF is primed to learn. I have seen trials with Dementia, psychotherapy and even enhancing learning in students!
A few psychiatrists are finally offering it in South Africa. The problem is that the machine is an eye-wateringly expensive piece of equipment. Which, in turn makes for an expensive treatment. Despite all the evidence, medical aids are not paying for it here yet (although they are in the USA and Europe).
PsychMg, an organisation of psychiatrists very vocal about patient rights, are fiercely agitating for medical aids to start paying for it in South Africa too. But for now, it is a cost investment.
It is also a time investment. Patients need around 30 treatments lasting anywhere from a few minutes to an hour. Daily or almost daily. But they do not need to be hospitalised and they can drive themselves and go back to work after a treatment.
I am very excited about this treatment option.
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