Balance Assessment

What Is a Balance Assessment?

A balance assessment is a specialist clinical evaluation designed to investigate the cause of dizziness, vertigo, unsteadiness, and other balance disturbances. It is carried out by an audiologist, audiovestibular physician, or ENT specialist using a series of tests that examine the vestibular system — the intricate balance apparatus housed within the inner ear. Because hearing and balance share the same anatomical home, many balance disorders are closely linked to hearing conditions, and audiologists are uniquely placed to assess both systems together.

Balance problems are far more common than most people realise. The Meniere`s Society estimates that around one in four adults in the UK will experience a significant episode of dizziness or vertigo at some point in their lives. NHS England reports that dizziness is one of the most frequent reasons for GP consultations, particularly among older adults. Yet despite the prevalence, balance disorders remain widely under-investigated — many people endure months or even years of symptoms before receiving a proper diagnosis. A comprehensive balance assessment is the essential first step towards identifying the cause and starting effective treatment.

The Vestibular System — How Balance Works

Understanding the vestibular system helps explain why so many different conditions can cause dizziness and balance problems. The system comprises several key structures within the inner ear:

• Three semicircular canals: Arranged at right angles to each other, these fluid-filled loops detect rotational movement of the head — nodding, turning, and tilting. When you move your head, the fluid (endolymph) inside the canals shifts, bending tiny sensory hair cells that send signals to the brain about the direction and speed of the movement.
• The utricle and saccule (otolith organs): These detect linear acceleration and gravity — telling the brain whether you are moving forwards, backwards, up, or down, and which way is "up." They contain small calcium carbonate crystals called otoconia (or otoliths), which rest on a gel-like membrane. When these crystals become dislodged, they can enter the semicircular canals and cause benign paroxysmal positional vertigo (BPPV).
• The vestibulocochlear nerve (cranial nerve VIII): This carries both balance and hearing signals from the inner ear to the brainstem. Inflammation of the vestibular branch of this nerve is the cause of vestibular neuritis.

The brain integrates vestibular signals with information from the eyes (visual system) and body position sensors (proprioceptive system) in the muscles, joints, and feet. When all three systems agree, you feel steady and oriented. When one system sends conflicting signals — as happens in vestibular disorders — the result is dizziness, vertigo, nausea, or a loss of balance. Understanding this interplay is central to the balance assessment process, as the clinician needs to determine which part of the system is responsible for your symptoms.

Common Causes of Balance Disorders in the UK

Balance disorders have many possible causes, ranging from benign and easily treatable conditions to those requiring more complex management. The most common vestibular diagnoses encountered in UK audiology and ENT clinics include:

Benign Paroxysmal Positional Vertigo (BPPV)

BPPV is the single most common cause of vertigo, accounting for approximately 20–30% of all dizziness presentations in specialist clinics (British Society of Audiology). It occurs when tiny calcium carbonate crystals (otoconia) become dislodged from the utricle and migrate into one of the semicircular canals — most commonly the posterior canal. This causes brief but intense episodes of spinning vertigo, typically triggered by specific head movements such as rolling over in bed, looking up, or bending down. Each episode usually lasts less than a minute but can be profoundly disorientating and frightening. BPPV is diagnosed using the Dix-Hallpike manoeuvre and is treated with the Epley manoeuvre or similar canalith repositioning procedures.

Meniere`s Disease

Meniere`s disease is a chronic inner ear condition characterised by episodes of vertigo lasting 20 minutes to several hours, fluctuating hearing loss (typically low-frequency), tinnitus, and a sensation of fullness or pressure in the affected ear. The Meniere`s Society estimates that around 1 in 1,000 people in the UK are affected. The condition is thought to be caused by abnormal fluid pressure (endolymphatic hydrops) in the inner ear, though the exact trigger remains the subject of ongoing research. Diagnosis requires a combination of clinical history, audiometry, and vestibular testing.

Vestibular Neuritis and Labyrinthitis

Vestibular neuritis is an inflammation of the vestibular nerve, usually caused by a viral infection, that produces sudden, severe vertigo lasting several days, accompanied by nausea and difficulty walking. When the inflammation also affects the cochlea — causing hearing loss alongside vertigo — it is called labyrinthitis. Both conditions are common and typically resolve over weeks, though residual unsteadiness can persist and benefit from vestibular rehabilitation therapy.

Other Causes

• Vestibular migraine: A common cause of episodic vertigo, often with a history of migraine headaches. NICE estimates that vestibular migraine may account for up to 10% of dizziness clinic presentations.
• Acoustic neuroma (vestibular schwannoma): A rare, benign tumour on the vestibular nerve that can cause gradual hearing loss, tinnitus, and unsteadiness. Diagnosis requires MRI scanning.
• Superior semicircular canal dehiscence (SSCD): A rare condition where a small opening in the bone covering the superior semicircular canal causes vertigo triggered by loud sounds or pressure changes.
• Medication side effects: Certain medications — including some antibiotics, blood pressure drugs, and sedatives — can cause dizziness as a side effect.
• Cardiovascular causes: Low blood pressure, postural hypotension, and heart rhythm disturbances can cause lightheadedness and faintness, which must be distinguished from true vestibular vertigo.

What Does a Balance Assessment Involve?

A comprehensive balance assessment is a detailed, multi-part evaluation that typically takes 60 to 90 minutes. The specific tests included depend on your symptoms, medical history, and the clinical suspicion of your referring clinician. Here is what you can expect:

Detailed Case History

Your audiologist or vestibular specialist will ask about the nature, onset, duration, and triggers of your dizziness. They will want to know whether you experience true spinning vertigo or a more vague unsteadiness, whether episodes are brief or prolonged, and whether specific movements or positions provoke symptoms. They will also ask about associated symptoms such as hearing loss, tinnitus, nausea, headache, and visual disturbance. Your medical history, medications, and any history of head injury are all relevant.

Otoscopy and Hearing Assessment

Because hearing and balance are closely linked, a visual examination of your ears (otoscopy) and a hearing test are usually included. Hearing loss alongside dizziness can point to specific diagnoses such as Meniere`s disease, labyrinthitis, or acoustic neuroma.

The Dix-Hallpike Manoeuvre

This is the primary diagnostic test for BPPV. You sit on an examination couch and the clinician rapidly moves you from a sitting position to lying flat with your head turned to one side and hanging slightly over the edge. The clinician watches your eyes for nystagmus — involuntary, rhythmic eye movements that indicate displaced otoconia in the semicircular canal. The direction, timing, and duration of the nystagmus tell the clinician which canal is affected and which side is involved.

Videonystagmography (VNG) or Electronystagmography (ENG)

VNG uses infrared video cameras mounted in lightweight goggles to record and analyse your eye movements in detail. ENG uses small electrodes placed around the eyes to detect the same movements electrically. Both techniques are used to assess the vestibular system`s response to visual stimuli (tracking a moving light), head position changes, and caloric stimulation. VNG is now the more commonly used method, as the video recording allows the clinician to review the results in detail after the appointment.

Caloric Testing

Caloric testing is one of the most informative components of a balance assessment. Warm (44°C) and cool (30°C) water or air is gently introduced into each ear canal in turn. The temperature change stimulates the horizontal semicircular canal of the inner ear, producing a nystagmus response that is recorded by the VNG goggles. By comparing the strength of the response from each ear, the clinician can identify a unilateral vestibular weakness — a reduced response on one side — which points to conditions such as vestibular neuritis, labyrinthitis, or Meniere`s disease. Caloric testing is the only vestibular test that can assess each inner ear independently.

Vestibular Evoked Myogenic Potentials (VEMPs)

VEMPs are specialised tests that assess the function of the otolith organs (utricle and saccule) and their neural pathways. Cervical VEMPs (cVEMPs) measure the saccule`s response to loud sounds by recording muscle activity in the neck (sternocleidomastoid muscle). Ocular VEMPs (oVEMPs) assess the utricle by recording muscle activity beneath the eyes. VEMPs are particularly useful for diagnosing superior semicircular canal dehiscence and for monitoring vestibular function in Meniere`s disease.

Computerised Dynamic Posturography (CDP)

Posturography measures your ability to maintain balance under different sensory conditions. You stand on a pressure-sensitive platform that records your postural sway while visual and surface conditions are systematically altered — for example, the platform may tilt, the visual surround may move, or your eyes may be closed. This reveals which of the three balance systems (vestibular, visual, proprioceptive) you rely on most and where any deficits lie. Posturography is particularly useful for guiding vestibular rehabilitation and for assessing falls risk in older adults.

Treatment Options for Balance Disorders

Once the cause of your balance problem has been identified, treatment can be targeted and highly effective. The main treatment approaches include:

Canalith Repositioning Manoeuvres (for BPPV)

The Epley manoeuvre is the first-line treatment for posterior canal BPPV and is one of the most satisfying procedures in all of audiology. The clinician guides your head and body through a specific sequence of positions designed to move the dislodged otoconia out of the semicircular canal and back into the utricle, where they can be reabsorbed. The Epley manoeuvre is effective in approximately 80–90% of cases in a single session (British Society of Audiology) and can be repeated if necessary. Other repositioning manoeuvres, such as the Semont manoeuvre and the BBQ roll (for lateral canal BPPV), are used depending on which canal is affected.

Vestibular Rehabilitation Therapy (VRT)

VRT is an evidence-based exercise programme designed to promote central compensation — the process by which the brain adapts to a vestibular deficit by relying more on visual and proprioceptive input. It is particularly effective for persistent unsteadiness following vestibular neuritis, labyrinthitis, and other unilateral vestibular losses. VRT typically involves gaze stabilisation exercises (keeping your eyes fixed on a target while moving your head), balance training (standing on different surfaces with eyes open and closed), and habituation exercises (repeated exposure to movements that provoke dizziness, training the brain to reduce the response). VRT is recommended by NICE and is available through NHS physiotherapy departments and specialist vestibular clinics.

Medication

Medication plays a limited but important role in balance disorder management. Betahistine is commonly prescribed for Meniere`s disease to reduce vertigo attack frequency. Prochlorperazine (Stemetil) and cyclizine may be used short-term to control acute vertigo and nausea but should not be taken long-term, as they can slow vestibular compensation. For vestibular migraine, migraine preventive medications (such as propranolol, amitriptyline, or topiramate) are used alongside lifestyle modification.

Surgical Intervention

Surgery is reserved for cases that do not respond to conservative treatment. Options include endolymphatic sac decompression for Meniere`s disease, canal plugging for SSCD, and, in rare cases, labyrinthectomy (deliberate destruction of the vestibular apparatus) when vertigo is intractable and hearing is already severely compromised on the affected side.

NHS vs Private Balance Assessments

Balance assessments are available through both NHS and private pathways in the UK:

NHS Balance Assessments

NHS balance assessments are free of charge and are accessed through referral from your GP or an ENT consultant to an audiovestibular clinic or balance centre. Most major NHS trusts have specialist vestibular services staffed by audiovestibular physicians and specialist audiologists. The main consideration is waiting times, which can range from a few weeks to several months depending on your area and the urgency of your referral. If your symptoms are severe, worsening, or associated with hearing loss, your GP can request an urgent referral.

Private Balance Assessments

Private balance assessments are available from specialist vestibular clinics, ENT consultants, and some private audiology practices. Costs typically range from £150 to £350, depending on the tests included. Private appointments can usually be arranged within days, which can be valuable for people with debilitating symptoms who cannot wait for an NHS appointment. Some providers, including Specsavers Audiology and Boots Hearingcare, offer vestibular screening as part of their audiology services.

Falls Risk and Older Adults — Why Balance Assessment Matters

For older adults, untreated balance problems carry a very real and potentially life-threatening risk: falls. According to NICE clinical guideline CG161, falls are the most common cause of injury-related death in people over 75 in the UK, and approximately one in three adults over 65 experience at least one fall per year. The NHS spends an estimated £2.3 billion annually on fall-related injuries (NHS England). Vestibular disorders are a significant contributing factor — a study published in the British Journal of General Practice found that vestibular dysfunction was present in approximately 80% of older adults with unexplained falls.

A balance assessment can identify vestibular causes of unsteadiness that are often treatable. BPPV, for example, is common in older adults and can be resolved in a single appointment with the Epley manoeuvre. Vestibular rehabilitation therapy can improve balance, confidence, and independence in older people with chronic unsteadiness. The link between age-related hearing loss and falls risk is also well established — research from Johns Hopkins University found that even a mild hearing loss triples the risk of falling, likely because reduced auditory input affects spatial awareness and cognitive load. This makes a combined hearing and balance assessment particularly valuable for older adults.

When to Seek a Balance Assessment

You should consider seeking a balance assessment if you experience any of the following:

• Recurrent vertigo: Spinning sensations, particularly triggered by head movements, rolling over in bed, or looking up
• Persistent unsteadiness: Feeling off-balance, light-headed, or as though you might fall, especially when walking or standing
• Dizziness with hearing changes: Vertigo accompanied by hearing loss, tinnitus, or ear fullness — which may suggest Meniere`s disease or labyrinthitis
• Falls or near-falls: Unexplained stumbles, trips, or falls, particularly in older adults
• Nausea and disorientation: Motion sickness, visual vertigo (dizziness triggered by busy visual environments), or difficulty focusing during head movement
• Symptoms affecting daily life: Any balance disturbance that is affecting your ability to work, drive, exercise, or carry out everyday activities

If you experience sudden vertigo with hearing loss, this may indicate sudden sensorineural hearing loss — a medical emergency that requires same-day assessment. Contact your GP or attend A&E immediately.

A balance assessment is the gateway to understanding what is causing your symptoms and, in many cases, to rapid and effective treatment. Whether your dizziness is caused by displaced crystals in the inner ear, an inflamed vestibular nerve, or a more complex condition, specialist assessment can provide answers and a clear path forward. Use our search tool to find audiologists near you, or speak to your GP about a referral to a vestibular clinic. You do not need to live with dizziness — help is available, and for many conditions, the results of treatment are remarkably quick.