Benign Recurrent Vertigo in Children: Paediatric Migraine Equivalents and Balance Assessment

Pathophysiology of Paediatric Vestibular Migraine Equivalents

Benign Recurrent Vertigo of Childhood (BRVC) - closely related to Vestibular Migraine of Childhood (VMC) and Benign Paroxysmal Vertigo of Childhood (BPVC) - is the most frequent cause of episodic dizziness in paediatric patients, typically presenting between the ages of 2 and 12 years. Unlike adult BPPV, which is mechanical, paediatric recurrent vertigo is primarily a neuro-vascular phenomenon recognized as a migraine precursor or equivalent.

The underlying mechanism involves transient neurochemical depolarization waves, altered cerebral blood flow, and trigeminovascular activation projecting into immature brainstem vestibular nuclei. Attacks manifest as sudden, unheralded episodes of true spinning vertigo or profound unsteadiness lasting from minutes to hours. The child suddenly clutches parents or furniture, appears pale, frightful, and nauseated, and may vomit. Crucially, between episodes, the child is entirely healthy with normal neurological and audiological function.

Domestic Context: Misunderstood Illness in Indian Families

In Indian family households, children experiencing sudden dizzy spells are frequently misunderstood. Parents and school teachers often accuse the child of feigning sickness (malingering) to avoid morning school assemblies, homework, or competitive examinations.

Alternatively, symptoms are attributed to weak digestion, intestinal worms, or dehydration. When episodes recur, panicked parents subject young children to repeated emergency hospitalizations, invasive blood tests, and unnecessary brain CT scans with ionizing radiation. Accurate clinical recognition of a benign paediatric migraine equivalent brings immense relief to families.

Clinical Testing: Age-Appropriate Paediatric Balance Screening

Clinical evaluation relies on adapted paediatric balance instruments and detailed family history.

• Family History of Migraine or Motion Sickness: Over 70 to 80% of affected children have a first-degree relative with classic migraine headaches, car sickness, or visual sensitivities.
• Pediatric Balance Scale (PBS): A modified 14-item functional balance test specifically validated for school-age children, evaluating seated, standing, and stepping equilibrium.
• Paediatric Video Head Impulse Test (vHIT): Utilizing lightweight paediatric video goggles to confirm symmetrical, normal high-frequency VOR gains across all canals between attacks.
• Otoscopic and Tympanometric Screen: Essential to rule out middle ear effusion (otitis media with effusion) or Eustachian tube dysfunction as triggers for balance instability.

Stage-by-Stage Functional Management Protocol

• Stage 1: Acute Attack Protocol and Quiet Rest: During an acute spell, place the child in a darkened, quiet room; encourage sleep, which characteristically terminates the episode; provide oral rehydration.
• Stage 2: Lifestyle and Trigger Regulation: Establish regular sleep schedules, ensure consistent meal timings, encourage hydration, and eliminate common food triggers (aged cheeses, MSG, excessive processed chocolates).
• Stage 3: Play-Based Vestibular and Motor Agility Retraining: For children with mild interictal motor awkwardness, introduce gamified balance drills, hopscotch, balance beams, and trampoline jumping.

Clinical Exercise Protocol: Gamified Paediatric Balance Drill

Clinical Comparison: Benign Recurrent Vertigo vs Paediatric BPPV vs Tumour

Red Flags: Posterior Fossa Tumours and Hydrocephalus

While benign recurrent vertigo is harmless, clinicians must remain vigilant for central paediatric brain tumours (medulloblastoma, cerebellar astrocytoma, ependymoma). Red flags that mandate emergent MRI neuro-imaging include: morning vomiting associated with headache, progressive ataxia between episodes, regression of developmental motor milestones, abnormal head tilt (torticollis), papilledema, or sixth nerve palsy (inability to look outward). Any persistent neurological sign must be escalated immediately.

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