FND symptoms · Often with FND

Post-concussion symptoms

When recovery after a head injury drags on

Also called: post-concussion syndrome · persistent symptoms after concussion

After a concussion, some people have prolonged headache, fog, dizziness, mood change and sensory sensitivity. These can overlap with functional symptom patterns and need careful, staged rehab — not endless rest or reckless push.

FND Connect information guide About 2 min read

This can occur alongside FND. It is not necessarily caused by FND and may need its own assessment and treatment.

Practical support When to get help

When to get help. Urgent care for worsening confusion, repeated vomiting, seizures, severe headache after injury, or neurological deterioration. Urgent help and advice.

On this page

How it can feel

Headache and pressure after mental effort.
Light and noise intolerance.
Fog, irritability and sleep disruption.
Dizziness with busy visuals.

Day to day

Return-to-work or study may need a graded plan.
Screens and open-plan spaces can prolong symptoms.
People may expect a linear recovery that you do not have.

How this can relate to FND

Concussion recovery involves brain networks settling after injury. Persistent symptoms can include functional amplification. Assessment should hold both injury history and functional patterns.

What can help

Medical review and, where needed, concussion clinics.
Graded cognitive and physical activity.
Sleep, headache and dizziness management.
Avoiding both prolonged total rest and sudden full-load return.

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

FAQs

How long should concussion symptoms last?

Many improve in days to weeks; some last longer. Persistent symptoms deserve structured support rather than dismissal.

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.

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