REFERENCE · RECOVERY TECHNIQUE

Discussing Experimental Stimulation With a Specialist

When this may fit: When a qualified team proposes a stimulation device or research study and you want to understand its limits and alternatives. [Experimental or emerging evidence; no established self-treatment protocol]

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For the Person With FND

A treatment that acts directly on nerves can sound more certain than exercise or talking therapy. For PPPD, certainty is still limited. This page helps you ask questions about a proposal; it is not instructions for using a device.

Different devices do different things

Repetitive transcranial magnetic stimulation (rTMS) uses a magnetic coil near the scalp to influence activity in selected brain networks.
Transcranial direct current stimulation (tDCS) applies a small electrical current through scalp electrodes.
Non-invasive vagus-nerve stimulation aims to stimulate nerve pathways through an external device; the exact device and site matter.
Galvanic vestibular stimulation (GVS) uses electrical stimulation near the ears to influence vestibular signals and can affect balance.

These methods are not interchangeable, and a result for one does not validate the others. “Non-invasive” means they do not require surgery; it does not mean risk-free. [1][2]

Before considering a treatment or study

Ask for the exact device and technique, and whether it is experimental, part of a regulated trial or offered outside research.
Ask which study matches your diagnosis and circumstances, what benefit is realistic and how long it was followed.
Ask about device-specific risks, contraindications, implanted devices, hearing protection where relevant, seizure risk, skin effects and balance changes. Screening belongs with the qualified team.
Ask about cost, travel, alternatives, stopping rules, follow-up and who manages an adverse effect.

A careful answer can include “we do not know.” A promising ranking in a pooled analysis is not proof that a device is the best choice for you. You may decline or defer without losing access to ordinary care.

Do not improvise a version at home

Do not apply TENS electrodes, batteries, magnets or consumer “vagus” devices to copy a clinical intervention. This page intentionally gives no electrode positions, current settings or stimulation schedule. Those details would not make unsupervised experimentation safe.

During a familiar flare

Tell the team before a planned session. Do not add sessions or change device settings yourself. New neurological symptoms or substantially changed dizziness need assessment rather than an assumption that stimulation is producing a necessary adjustment.

When to stop and seek assessment

Stop unsafe activity. Sudden or distinctly different dizziness with new weakness, double vision, speech trouble, inability to walk, severe headache, fainting or chest pain needs urgent assessment. Sudden hearing loss, head injury or persistent vomiting also needs prompt medical attention. Increasing falls or progressive loss of function warrants reassessment. Existing PPPD does not explain every new symptom. See the diagnostic and differential-assessment page.

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For Family, Friends, and Other Supporters

Help write down questions and compare the practical burden with the person’s goals, if invited. Be cautious about testimonials and pressure to pay quickly. Support a decision to stop or decline, and retain ordinary mobility and access help.

During a familiar flare, follow the agreed support and safety plan. Ask before taking over. New or substantially different symptoms need their own assessment; an exercise should never delay that care.

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For Clinicians and the Care Team

Separate modalities, indications and evidence populations. The network meta-analysis groups heterogeneous interventions and includes diagnostically equivalent conditions; it should not set a routine treatment hierarchy. Use appropriate device governance, contraindication screening, consent and adverse-event follow-up. Lack of benefit should lead to review, not escalating an unproven dose.

Agree an accessible next step and review point. Consider meaningful activity, safety, access, effort and delayed effects alongside dizziness severity. Limited improvement is not grounds to withdraw assistance or infer lack of effort.

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Research and Sources

This page expands original entry 11, Specialist neuromodulation or galvanic vestibular stimulation. Examples and practical prompts are educational adaptations, not patient quotations or a reproduced treatment protocol. Original-entry numbering does not imply thirteen independently validated treatments.

The 2026 network included 11 trials and 518 participants; 81.8% of studies were at high risk of bias. Neuromodulation estimates were promising for some outcomes, but the network was sparse. The strict 2023 Cochrane review included one 24-person tDCS study and left considerable uncertainty. Neither review establishes a home protocol or general device-class effectiveness.

Citation	Source	What it supports and its limits	Figure
1	FND-CIT-0041 — Shen J, Zhao X, Huo Y, et al. Comparative efficacy of non-pharmacological interventions for persistent postural-perceptual dizziness: a systematic review and network meta-analysis of balance, anxiety, and depression outcomes. Journal of Neurology. 2026;273:366. DOI.	Sparse network, mixed interventions and substantial bias; rankings are not a treatment recommendation.	—
2	FND-CIT-0040 — Webster KE, Kamo T, Smith L, et al. Non-pharmacological interventions for persistent postural-perceptual dizziness (PPPD). Cochrane Database of Systematic Reviews. 2023;3:CD015333. DOI.	Strict comparator and follow-up criteria left very limited evidence; not proof that rehabilitation cannot help.	—

Sources checked: September 22, 2026 · Vestibular, neurological, lived-experience and accessibility review pending

For the Person With FND
For Family, Friends, and Other Supporters
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