Balance disorders in childhood: Main etiologies according to age. Usefulness of the video head impulse test.
UNLABELLED
Balance disorders are common in adult patients but less usual in the pediatric population. When this symptomatology appears in children it is a cause for concern, both for parents and health-care professionals.


OBJECTIVES
To explain the balance disorders in children describing a case series and to discuss the main etiologies found according to age.


STUDY DESIGN
A retrospective, observational, descriptive, and cross-sectional study was conducted.


POPULATION
Patients aged 1-18 years who consulted because of balance disorders at the otolaryngology department of a pediatric tertiary-care hospital between March 2012 and July 2015.


RESULTS
Two hundred and six patients were included in the study. Median age was 10 years. The most common diagnoses were vestibular migraine in 21.8% of the children, ataxia in 9.22%, benign paroxysmal vertigo of childhood in 7.77%, and post-traumatic vertigo in 6.31%.Overall, 61 videonystagmographies- of which 46 were normal - and 55 video head impulse tests - which were normal in 45 and showed abnormalities in the vestibulo-ocular reflex gain in 10 - were performed.


CONCLUSIONS
In a child with balance disorders, the medical history and neurotological examination are essential. Vestibular migraine is the most commonly found disorder in every age group, and most of the patients have a family history of migraine. Ancillary studies, especially the video head-impulse test, provide important data to confirm the diagnosis.