FND symptoms · FND presentation

Dizziness and persistent imbalance

When the world will not sit still — or you will not

Also called: functional dizziness · PPPD · persistent postural-perceptual dizziness · chronic subjective dizziness

Functional dizziness can feel like rocking, swaying, foggy head, or constant unsteadiness that is worse in busy visual environments. It often lasts months and steals confidence even when brief spins are not the main story.

Practical supportWhen to get help
When to get help. Urgent care for sudden severe dizziness with chest pain, fainting, new neurological deficit, or the worst headache of your life. Urgent help and advice.
On this page

How it can feel

  • A floating, rocking or “at sea” sensation.
  • Unsteadiness in supermarkets, scrolling screens or busy streets.
  • Heavy head fog with light and sound sensitivity.
  • Better on some days, wrecked by visual motion on others.

Day to day

  • Avoidance of shops, travel and screens can creep in.
  • Nausea and fatigue often join the picture.
  • Fear of falling reduces activity, which can worsen confidence further.

Understanding this FND symptom

Balance is a multisensory prediction system. After vestibular events, migraine, or high threat load, the system can get stuck in a protective, overly sensitive mode — a functional pattern that is still very real.

What can help

  • Assessment to exclude dangerous causes, then a clear explanation.
  • Vestibular / specialised physiotherapy where appropriate.
  • Graded exposure to avoided visual environments with support.
  • Treating migraine, sleep debt, anxiety loops and neck tension where relevant.

This is information, not a treatment plan. Personal care decisions belong with you and your clinicians.

FAQs

Is this just anxiety?

Anxiety can amplify dizziness, but functional dizziness is not “imagined”. Many people need both vestibular strategies and support for nervous-system threat responses.

About this guide & further reading

Written and published by FND Connect. This is general information for people living with FND and those supporting them. It does not diagnose a symptom or replace advice from your clinician.

External resources provide further reading; their inclusion does not mean their authors have reviewed or endorsed this FND Connect guide. Page updated 3 October 2026.

Take this to your next conversation

Note what happens, how it affects your day and what you want to ask. An appointment pack can help you organise that conversation.