Balance Problems and Dizziness: Neurological Causes

What controls balance, and what goes wrong?

Balance depends on three systems working in tandem: the vestibular organs in your inner ears, your vision, and sensory input from your muscles and joints (proprioception). The brain processes signals from all three and adjusts your posture and gait in real time. When any link in that chain is disrupted, the result can be dizziness, unsteadiness, a floating sensation, or a tendency to veer to one side.

The vestibular system is the most common source of chronic balance trouble. The neurological causes are less frequent but real, and they tend to produce a different pattern of symptoms.

What are the most common vestibular causes of dizziness?

Benign paroxysmal positional vertigo (BPPV) is the single most common cause of episodic vertigo in adults. It produces brief, intense spinning triggered by specific head movements — rolling over in bed or tipping the head back. It arises when calcium carbonate crystals in the inner ear drift into the wrong canal. The Epley manoeuvre, a series of head repositioning movements performed by a trained clinician, resolves most cases quickly 1Ref 1Bhattacharyya N, Gubbels SP, Schwartz SR, Edlow JA, El-Kashlan H, Fife T, et al. (2017).Clinical Practice Guideline: Benign Paroxysmal Positional Vertigo (Update).BPPV as the most common cause of episodic vertigo and the Epley manoeuvre as first-line repositioning treatment2Ref 2Hilton MP, Pinder DK (2014).The Epley (canalith repositioning) manoeuvre for benign paroxysmal positional vertigo.Efficacy of the Epley manoeuvre for resolving BPPV.

Vestibular neuritis and labyrinthitis follow a viral illness and cause a sudden onset of severe vertigo, often lasting days, followed by weeks of milder unsteadiness. Recovery is supported by vestibular rehabilitation therapy 3Ref 3McDonnell MN, Hillier SL (2015).Vestibular Rehabilitation for Unilateral Peripheral Vestibular Dysfunction.Strong evidence for vestibular rehabilitation therapy in peripheral vestibular dysfunction4Ref 4Hillier SL, McDonnell MN (2016).Is Vestibular Rehabilitation Effective in Improving Dizziness and Function After Unilateral Peripheral Vestibular Hypofunction? An Abridged Version of a Cochrane Review.Vestibular rehabilitation improves dizziness and function after peripheral vestibular hypofunction.

Meniere's disease produces recurring attacks of vertigo, low-frequency hearing loss, tinnitus, and ear fullness. Attacks can be unpredictable and disabling; a neurologist or ENT manages the condition with dietary changes, diuretics, and in some cases procedures 5Ref 5Basura GJ, Adams ME, Monfared A, Schwartz SR, Antonelli PJ, Burkard R, et al. (2020).Clinical Practice Guideline: Ménière's Disease.Meniere's disease as a vestibular cause of recurrent vertigo, hearing loss, and tinnitus.

When does dizziness have a neurological cause?

Some patterns suggest the brain or nervous system rather than the inner ear:

• Cerebellar stroke or TIA — sudden onset, often with other signs such as double vision, limb incoordination, or difficulty speaking. This is a medical emergency.
• Multiple sclerosis — demyelinating lesions can affect the cerebellum or brainstem, producing chronic balance problems alongside other neurological symptoms.
• Central positional vertigo — positional vertigo that does not fit the typical BPPV pattern, does not respond to canalith repositioning, or is accompanied by neurological signs may point to a posterior fossa lesion.
• Peripheral neuropathy — sensory nerve damage (from diabetes, vitamin B12 deficiency, or other causes) impairs proprioception, creating unsteadiness that is often worst in the dark.
• Acoustic neuroma (vestibular schwannoma) — a slow-growing benign tumor on the vestibular nerve that causes progressive one-sided hearing loss, tinnitus, and imbalance.

A clinician will distinguish central from peripheral causes by the character of nystagmus on examination, the HINTS exam (Head Impulse, Nystagmus, Test of Skew), and imaging when indicated.

What other conditions cause chronic balance problems?

Several non-vestibular, non-neurological conditions produce unsteadiness:

• Orthostatic hypotension — a drop in blood pressure on standing that causes lightheadedness and a brief loss of balance, particularly in older adults or people on certain blood pressure medications.
• Medication side effects — sedatives, anticonvulsants, blood pressure drugs, and some antibiotics can impair balance.
• Vision problems — uncorrected refractive error or cataract can reduce the visual input the brain needs to maintain stability.
• Cervicogenic dizziness — dizziness and unsteadiness arising from the neck, often after whiplash or in degenerative cervical spine disease.
• Anxiety and panic disorder — chronic anxiety can produce a persistent sense of unsteadiness or dissociation (sometimes called Persistent Postural-Perceptual Dizziness, PPPD), where the dizziness is real but driven by the nervous system's hypervigilance rather than a structural lesion.

What does the evaluation involve?

A vestibular specialist or neurologist will typically take a detailed history — focusing on the *type* of dizziness (spinning vs. floating vs. lightheadedness), the *duration* of episodes, *triggers*, and associated symptoms — followed by a physical and neurological examination. The HINTS exam is highly sensitive for distinguishing dangerous central causes from benign peripheral ones.

Additional tests may include: - Videonystagmography (VNG) or video head impulse testing (vHIT) to assess vestibular function - Audiometry if hearing symptoms are present - MRI with contrast if a central lesion or acoustic neuroma is suspected - Blood work for anemia, thyroid dysfunction, or B12 deficiency - Tilt-table testing if orthostatic hypotension is suspected

Vestibular rehabilitation therapy — a structured program of gaze stabilization and balance exercises — has strong evidence supporting its benefit for unilateral peripheral vestibular dysfunction 3Ref 3McDonnell MN, Hillier SL (2015).Vestibular Rehabilitation for Unilateral Peripheral Vestibular Dysfunction.Strong evidence for vestibular rehabilitation therapy in peripheral vestibular dysfunction4Ref 4Hillier SL, McDonnell MN (2016).Is Vestibular Rehabilitation Effective in Improving Dizziness and Function After Unilateral Peripheral Vestibular Hypofunction? An Abridged Version of a Cochrane Review.Vestibular rehabilitation improves dizziness and function after peripheral vestibular hypofunction.

Gale does not provide specialist vestibular or neurological care directly, but a Gale primary care clinician can evaluate your symptoms, order initial labs and imaging, and connect you with the right specialist — an otolaryngologist with vestibular training, a neurologist, or a vestibular physical therapist.