Transcranial Direct Current Stimulation (tDCS)
When you’re already struggling with depression, getting to a clinic several times a week can feel like a lot. That’s one reason researchers are studying whether a small headset and a course of sessions at home can help.
What is it?
01tDCS stands for transcranial direct current stimulation.
A portable device sends a weak, steady electrical current through two electrodes held against the scalp. You might feel a light tingle when the session starts.
TMS uses magnetic pulses. tDCS delivers a low electrical current through the scalp that can change how readily nearby brain cells respond.
Some devices are designed for home use. In Australia, a home-use device is included in the Australian Register of Therapeutic Goods [4].
What may it help with?
02Depression is one of the most studied uses of tDCS. Researchers are also exploring whether it can help adults with ADHD stay focused, ease symptoms of anxiety, and support people doing trauma therapy.
How does it work?
03In depression studies, one pad is usually placed over the left front of the head, above an area involved in mood and motivation, and the other over the right.
Researchers think repeated sessions may influence how networks involved in mood work together. They’re still learning which settings and schedules are most helpful.
Depression trials typically assess change across several weeks. The timing and type of changes a person notices can vary.
What does the evidence say?
04One of the most encouraging findings is that some people with major depression improved with a structured course of tDCS they could do at home. Other studies have looked at changes that matter in daily life, from staying focused to worrying less.
Depression and treatment at home
In a trial of 174 adults with major depression, symptoms improved more over 10 weeks with active tDCS than with sham stimulation, which mimics treatment. About 45% of the active group reached remission, compared with 22% of the sham group. Remission meant symptoms fell below the study’s clinical threshold. The headset maker sponsored the trial [1].
Depression and existing treatment
A 2025 review of 88 trials of electrical brain stimulation found that depressive symptoms improved more when tDCS was combined with medication than when tDCS was used on its own [2].
ADHD and staying focused
In a review of seven trials involving 263 adults with ADHD, people who received tDCS reported fewer symptoms of inattention and performed better on tasks that tested attention [5].
Anxiety and persistent worry
In a small trial of 43 adults with generalised anxiety and depression, people who received tDCS alongside psychological therapy reported less anxiety and worry than those who received the same therapy alone. The difference was still evident at the three-month follow-up [6].
PTSD and hypervigilance
In a study of 54 veterans with PTSD, people who received tDCS during virtual reality exposure therapy reported greater improvement in PTSD symptoms one month later. Their physical reactions to trauma reminders in the sessions also eased faster [7]. That’s encouraging for people who know what it feels like to be constantly on alert.
What does a session look like?
05A headset or headband holds two electrodes against your scalp. Sessions often take around 20 to 30 minutes, and you stay awake throughout.
You may feel tingling or itching under the pads, especially at the start.
In the 10-week home trial, the team supervised the first session remotely and could track later sessions through the app [1].
Finding the right clinic or trial
Ask who will show you how to use the device and what to do if it’s uncomfortable. It’s also worth talking about which changes you want to track, whether that’s your mood, your sleep or how you feel day to day.
Risks and considerations
06Skin comfort. Tingling, itching and redness under the pads are common. Stop and contact the team if you feel burning or notice persistent irritation [1, 3].
Device and settings. Use a device intended for home treatment and follow the instructions you’ve been given. Avoid homemade equipment or changing the settings yourself.
Before starting. Tell the clinician if you have an implanted device or a skin condition where the electrodes would sit.
Questions to ask a practitioner
07- Which device do you use, and what evidence supports it?
- Who will show me how to use it at home, and who do I contact if something feels wrong?
- What changes should I track, and when will we review them?
Founder’s Insight
“On the nights I used it, I could feel a difference.”
After a few sessions of neurofeedback, I was sent home with a stimulation kit to try. I felt more relaxed on the nights I used it. When I followed the instructions and used it consistently, I noticed I felt less on edge and my mood improved and my capacity increased. That feeling of always being on alert started to ease. I’ve tried a couple of devices and I’m still figuring out what suits me. I hope they get easier to use and more affordable, because being able to try something at home made a difference to me.
Founder, The Mental Wealth Hub
You’ve read about it. Now what can you actually do?
You don’t need to have the perfect plan. Choose the next step that feels most useful for where you are right now.
Always speak with a qualified health professional before starting something new. If you are struggling right now, find immediate support.
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This is educational information. It is not a recommendation that this approach is right for you. Always speak with a qualified health professional.
