tDCS FOR TINITUS REDUCTION

Transcranial direct current stimulation (tDCS) is a non-invasive neuromodulation method that can reduce the intensity and distress of tinnitus in some patients. The therapy uses a very low-intensity electrical current, applied to the scalp, to influence the activity of the brain areas involved in sound perception.

Below, we explain in detail what tinnitus is, how tDCS works, who can benefit from treatment, and what results you can realistically expect.

What is tinnitus?

Tinnitus is the perception of a sound that does not come from an external source. You may hear it as a ringing, a rustling, a buzzing or a hissing, in one ear, in both, or “in the head”.

Current research shows that tinnitus is not just an ear problem. In many cases, it is linked to altered neural activity in the central nervous system, especially in the areas that process sound and emotions.

Types of tinnitus

In medical practice, tinnitus is classified according to several criteria:

• subjective tinnitus – is heard only by the patient and is the most common form;
• objective tinnitus – can also be perceived by the doctor during examination; it is rare and usually has a vascular or muscular cause;
• pulsatile tinnitus – follows the rhythm of the heartbeat and requires additional investigations;
• acute tinnitus – lasts for a few weeks;
• chronic tinnitus – persists for more than 3–6 months.

Causes of tinnitus

Tinnitus can have several causes, sometimes combined:

• repeated exposure to loud noise (music, industrial environments);
• age-related hearing loss;
• earwax blockage or ear infections;
• certain medications that affect hearing;
• disorders of the temporomandibular joint;
• muscle tension in the cervical area;
• stress and prolonged fatigue;
• vascular or neurological conditions.

Identifying the cause is the first step. This is why an ENT and audiological evaluation is recommended before any neuromodulation therapy.

How does tinnitus affect quality of life?

For many people, chronic tinnitus is not just background noise. It can affect sleep, concentration and emotional state.

Frequently reported effects include:

• difficulty falling asleep and fragmented sleep;
• reduced ability to concentrate at the office or while studying;
• irritability and fatigue;
• anxiety related to the persistence of the sound;
• avoidance of quiet places, where tinnitus becomes more noticeable.

In research, a distinction is made between tinnitus intensity (how loud you perceive it) and the distress it causes (how much it bothers you). Both can be influenced through therapy.

What is transcranial direct current stimulation (tDCS)?

Transcranial direct current stimulation (tDCS) is one of the transcranial electrical stimulation therapies. It is a non-invasive technique in which a low-intensity direct current (usually 1–2 mA) is applied through electrodes placed on the scalp.

The current does not cause muscle contractions and does not trigger nerve impulses. It slightly modifies the excitability of the neurons in the stimulated area.

How does tDCS therapy work?

A stimulation device sends a constant current between two or more electrodes:

• the anode – tends to increase the excitability of the area beneath the electrode;
• the cathode – tends to decrease it.

The position of the electrodes is determined by the brain area that needs to be influenced. For tinnitus, the most studied targets are the left temporoparietal area and the dorsolateral prefrontal cortex.

A newer variant is HD-tDCS (high-definition tDCS). It uses small electrodes arranged in a ring, which concentrate the current on a more precise area.

For details about the general principles of the method, you can also read the article on transcranial direct current stimulation (tDCS).

Mechanism of action on the brain

Tinnitus is associated with a network of brain areas that work together:

• the primary auditory cortex and the auditory association areas;
• the temporoparietal area;
• the prefrontal cortex, involved in attention and emotional control;
• structures of the limbic system (the amygdala, the hippocampus).

tDCS acts through neuromodulation. More precisely, stimulation can promote neural plasticity and can disrupt the activity patterns that maintain the perception of tinnitus.

Why is tDCS therapy used in the treatment of tinnitus?

Currently, there is no universal treatment for chronic tinnitus. Therapies aim to reduce intensity and distress, so that the patient regains control over everyday life.

tDCS is used because:

• it acts directly on the neural networks involved;
• it is non-invasive and does not require anesthesia;
• it has a good safety profile, documented in numerous studies;
• it can be integrated into a broader treatment plan.

How does transcranial direct current stimulation help reduce tinnitus?

What do clinical studies say?

Research shows that tDCS can produce a transient reduction in tinnitus, lasting from a few seconds to a few hours after a session, depending on the stimulated area and the parameters used.

The main data from the literature:

• stimulation of the left temporoparietal area reduced tinnitus in approximately 35–40% of participants in studies with conventional tDCS;
• bifrontal stimulation of the prefrontal cortex was associated with a decrease in the perception of tinnitus and the associated stress;
• in a study with HD-tDCS in 27 patients with chronic tinnitus (over 2 years), 21 of them (approximately 78%) reported a temporary improvement in intensity and/or distress.

The same study compared several settings. The results are summarized below:

It is important to remember that results vary from one patient to another. Researchers continue to recommend larger studies to establish the optimal protocols.

Benefits observed in patients

Patients who respond to treatment usually describe:

• a decrease in the perceived loudness of the tinnitus;
• less distress during the day;
• less emotional tension related to the symptom;
• easier falling asleep, in some cases;
• a better ability to focus their attention on other activities.

Who can benefit from this therapy

tDCS may be considered for:

• adults with chronic subjective tinnitus;
• patients who have already completed the ENT and audiological evaluation;
• people for whom other approaches have given limited results;
• patients who want a non-invasive therapy, without additional medication.

Exploratory studies suggest that people with less hearing loss might respond better, but this hypothesis has not yet been statistically confirmed. Eligibility is determined only after a medical evaluation.

How does a tDCS session go?

Duration and frequency of treatment

A tDCS session usually lasts 20 minutes of actual stimulation, in addition to the time needed to prepare and position the electrodes.

The number and pace of sessions are determined by the doctor. Usually, treatment takes place in series of sessions scheduled at regular intervals, in order to consolidate the effects.

What does the patient feel during the session?

The procedure is well tolerated. In the first few minutes you may feel:

• a slight tingling beneath the electrodes;
• a sensation of itching or local warmth;
• rarely, slight drowsiness.

These sensations occur mainly at the beginning of stimulation and usually disappear within a short time. Throughout the session you sit comfortably, and you can communicate with the specialist at any time.

Recommendations before and after treatment

Before the session:

• wash your hair and avoid styling products (gel, hairspray, oils);
• tell the doctor about the medication you are taking;
• avoid excessive consumption of coffee or alcohol on the day of the session;
• get adequate rest the night before.

After the session:

• you can resume your usual activities immediately;
• note how you perceive the tinnitus in the following hours (intensity and distress, on a scale from 1 to 10);
• report any unusual sensation to the doctor.

Advantages of transcranial direct current stimulation for tinnitus

Non-invasive treatment

tDCS does not involve incisions, injections or anesthesia. The electrodes are placed on the surface of the scalp, and the current used is of very low intensity.

Painless and well tolerated

The procedure is not painful. In published studies, tDCS has been safely applied to more than 3,000 people, without significant adverse effects. The reported sensations were mild and short-lived.

Can be combined with other therapies

tDCS can be part of a complex treatment plan, adapted to each patient. Depending on the evaluation, the doctor may also recommend:

• neurofeedback, to regulate brain activity and reduce anxiety;
• psychological counseling, to manage the associated stress;
• cervical physiotherapy or treatment for the temporomandibular joint, when these contribute to the symptoms;
• hyperbaric oxygen therapy for tinnitus, in selected cases.

Are there contraindications or adverse effects?

Who should not undergo the treatment?

tDCS therapy is generally not recommended in the following situations:

• metal implants in the head area or electronic implants (for example, a pacemaker, a cochlear implant);
• history of seizures or epilepsy;
• previous brain surgery;
• pregnancy;
• uncontrolled cardiovascular conditions;
• lesions, wounds or irritation of the scalp in the area of application;
• certain treatments with psychotropic medications, assessed on a case-by-case basis.

Possible adverse reactions

The reported reactions are generally mild and transient:

• tingling or itching beneath the electrodes;
• temporary redness of the skin;
• a slight burning sensation on the scalp;
• mild headache;
• drowsiness or fatigue after the session.

Safety measures

To ensure that the therapy takes place under optimal conditions, at Centrokinetic:

• every patient undergoes a medical evaluation before treatment;
• the stimulation parameters are set individually by the doctor;
• sessions take place under the supervision of a specialist;
• the progression of symptoms is constantly monitored, and the plan is adjusted as needed.

How many sessions are needed for results?

Factors that influence effectiveness

The response to tDCS differs from one person to another. The most important factors are:

• how long you have had the tinnitus and how intense it is;
• the degree of hearing loss;
• the cause that triggered the tinnitus;
• the stimulation area and the parameters used;
• the regularity of sessions;
• combination with other therapies and stress management.

When do the first results appear?

Some patients notice a decrease in tinnitus intensity even after the first sessions, but the initial effect is usually temporary. Consolidating the benefits generally requires a full series of sessions.

The doctor evaluates the response along the way, using intensity and distress scales, and decides whether the treatment continues or is adjusted.

Maintaining the benefits

To keep the results obtained:

• follow the plan set by the doctor in full;
• return for follow-up reevaluations;
• protect your hearing in noisy environments;
• pay attention to sleep and stress management;
• discuss maintenance sessions with the doctor if the symptoms return.

Schedule an evaluation

Chronic tinnitus can be managed more easily when you benefit from a proper evaluation and a tailored treatment plan. A clear medical evaluation makes it possible to identify the causes, determine eligibility for tDCS and choose the appropriate parameters.

Why it matters to act early: early intervention can limit the impact of tinnitus on sleep, concentration and emotional state, and can improve the response to therapy.

At Centrokinetic you benefit from:

• a personalized approach – the treatment plan is built according to your history, investigations and goals;
• the expertise of the medical team – the therapy is coordinated by Dr. Edis Mustafa, senior physician in medical rehabilitation, with a doctorate in tES therapy and experience treating more than 200 patients;
• careful monitoring – your progress is tracked throughout the treatment;
• access to complementary therapies – neurofeedback, psychology, physiotherapy and other services, in the same clinic.

Book now for a specialist consultation.

Frequently asked questions about transcranial direct current stimulation for tinnitus

Does the therapy permanently cure tinnitus?

tDCS therapy does not guarantee the permanent disappearance of tinnitus. The goal of therapy is to reduce intensity and distress, so that the symptom affects your everyday life as little as possible. Results depend on each patient and on the therapeutic plan followed.

Is the procedure painful?

No. Most patients feel only a slight tingling or itching beneath the electrodes, especially in the first few minutes. These sensations are transient and do not require interrupting the session.

Can tDCS be combined with drug treatment?

In many cases, yes. However, some medications can influence the response to stimulation. This is why it is important to tell the doctor about all the treatments you are taking, so that they can set up a safe and effective plan.

Is this therapy suitable for every type of tinnitus?

No. tDCS is studied mainly in chronic subjective tinnitus. Pulsatile or objective tinnitus requires, first of all, investigation of the cause (vascular, muscular or of another nature). The medical evaluation determines whether the therapy is suitable for you.

Sources:

• Antal, Andrea, et al. "Low Intensity Transcranial Electric Stimulation: Safety, Ethical, Legal Regulatory and Application Guidelines." Clinical Neurophysiology, vol. 128, no. 9, 2017, pp. 1774–1809, doi:10.1016/j.clinph.2017.06.001. Accessed on 30 Sept. 2026.
• Baguley, David, et al. "Tinnitus." The Lancet, vol. 382, no. 9904, 2013, pp. 1600–1607, doi:10.1016/S0140-6736(13)60142-7. Accessed on 30 Sept. 2026.
• Shekhawat, Giriraj Singh, et al. "Intensity, Duration, and Location of High-Definition Transcranial Direct Current Stimulation for Tinnitus Relief." Neurorehabilitation and Neural Repair, vol. 30, no. 4, 2016, pp. 349–359, doi:10.1177/1545968315595286. Accessed on 30 Sept. 2026.
• Shekhawat, Giriraj Singh, et al. "Transcranial Direct Current Stimulation Intensity and Duration Effects on Tinnitus Suppression." Neurorehabilitation and Neural Repair, vol. 27, no. 2, 2013, pp. 164–172, doi:10.1177/1545968312459908. Accessed on 30 Sept. 2026.
• Tunkel, David E., et al. "Clinical Practice Guideline: Tinnitus." Otolaryngology–Head and Neck Surgery, vol. 151, no. 2, suppl., 2014, pp. S1–S40, doi:10.1177/0194599814545325. Accessed on 30 Sept. 2026.
• Wang, Tang-Chuan, et al. "Effect of Transcranial Direct Current Stimulation in Patients With Tinnitus: A Meta-Analysis and Systematic Review." Annals of Otology, Rhinology & Laryngology, vol. 127, no. 2, 2018, pp. 79–88, doi:10.1177/0003489417744317. Accessed on 30 Sept. 2026.
• Yuan, Tifei, et al. "Transcranial Direct Current Stimulation for the Treatment of Tinnitus: A Review of Clinical Trials and Mechanisms of Action." BMC Neuroscience, vol. 19, 2018, article 66, PMC6202858. Accessed on 30 Sept. 2026.