Dizziness after a traumatic brain injury

Emergency numbers
United States: 911
United Kingdom: 999 or 112
European Union: 112
Elsewhere: your local emergency number

Short answer. After a traumatic brain injury, dizziness may describe spinning, a floating sensation or loss of balance. Possible causes are not limited to the inner ear: vision, the neck, certain medicines and the systems controlling balance may be involved. An examination first aims to rule out a complication of the injury, then identify the precise mechanism behind the symptoms.

Important. Dizziness that starts after a recent blow to the head warrants medical advice without delay, even if its cause seems harmless. If the person can no longer stand, has weakness on one side, difficulty speaking, double vision, confusion, difficulty staying awake or a worsening headache, call emergency services immediately. This text cannot help you determine the severity of an injury on your own.

Spinning, unsteadiness or feeling faint: what exactly do you feel?

Saying you feel dizzy does not describe the experience precisely enough. Vertigo creates the impression that the room is spinning or your body is turning in space. Unsteadiness is more like walking uncertainly, needing to touch a wall or slow down. A light-headed or faint feeling may occur when you stand up. These descriptions help the healthcare professional choose useful examinations; they do not, on their own, establish the cause of the problem.

For example, someone who feels a spinning sensation when turning over in bed is describing a different difficulty from someone who loses their balance walking along a busy corridor. A sensation that mainly occurs on standing may suggest other causes, including a drop in blood pressure. After a recent impact, however, the injury context must be assessed before assuming a usual cause of dizziness.

Why can an impact disrupt balance?

Balance depends on cooperation between vision, the body’s position sensors, the inner ear’s vestibular system and the brain regions that combine this information. An injury can disrupt several of these components at once. This is one reason two people with head injuries may have very different symptoms.

A vestibular problem may cause vertigo triggered by certain head positions, but visual difficulties, neck pain, migraine or certain medicines can also contribute to unsteadiness. Several factors may coexist. Targeted care therefore requires identifying them rather than prescribing the same exercises for everyone.

Do not decide for yourself that dizziness after an accident is simply a displaced inner-ear crystal and then try a repositioning manoeuvre found in a video. After an injury, especially if a neck injury is possible, movements and tests must be adapted by a professional.

When should you seek emergency help?

French guidance on dizziness identifies a recent head injury as one of the circumstances requiring an immediate consultation. After an impact, the level of urgency also depends on accompanying symptoms.

Call emergency services for impaired consciousness, difficulty waking the person, a seizure, weakness in a limb or the face, abnormal speech, increasing confusion or an intensifying headache. New double vision or an inability to stand in this context is also concerning. Do not wait for several of these signs to appear.

If dizziness began after the injury without an obvious neurological sign, still seek prompt advice on appropriate medical care. Anticoagulant or antiplatelet medication, loss of consciousness, amnesia or vomiting is particularly important to report. Still being able to walk or having no visible bump is no guarantee of safety. In France, any vomiting after the injury warrants an immediate call to emergency medical services for guidance on care.

Reducing the risk of a fall while awaiting assessment

The immediate aim is to avoid another injury, rather than get used to the dizziness. If the person is unsteady, do not let them climb stairs alone, work at height or drive. Help them get into a safe position, assist them in moving only if this can be done safely, and follow the medical team’s instructions. If a neck injury is possible, limit unnecessary movement and follow instructions from emergency services.

After the initial assessment, if the doctor allows discharge home and symptoms persist, some adjustments can reduce risks: light the route between the bedroom and toilet, clear walkways, provide a stable support and get up gradually. These measures support assessment; they do not replace it.

What should you note before the consultation?

Describing a day’s symptoms often helps make them more concrete. If possible, note when the sensation begins, how long it lasts, what triggers it — turning, standing, walking or looking at a screen — and what accompanies it, such as headache, nausea, changes in hearing or blurred vision. Add medication taken and the circumstances of the injury.

For example, three brief episodes of spinning when turning your head to the right, starting after yesterday’s fall, is more precise than saying you have felt strange since the fall. These are useful observations to share, not a self-diagnosis.

What if dizziness continues beyond the acute phase?

Persistent symptoms may warrant assessment of balance, vision, walking and sometimes vestibular function. Depending on the findings, vestibular rehabilitation or physiotherapy may be offered. Exercises must take account of the diagnosis, other injuries, fatigue and fall risk. The aim is to move around safely again, not to provoke symptoms at any cost.

Fear of falling may also lead someone to stop going out. This deserves attention, because reducing activities over the long term without support can undermine independence. A gradual return, adapted with the professionals providing follow-up care, is often more useful than a performance target.