Seasonal Variation in Vestibular Neuritis
Vestibular neuritis does not show a consistent seasonal pattern, and there is no evidence supporting increased incidence in spring or any other specific season.
Evidence on Seasonality
The available research directly examining seasonal variation in vestibular neuritis provides clear findings:
A prospective population-based study in Croatia (2011-2012) found no statistically significant uneven distribution of vestibular neuritis cases across different months or seasons 1. This study identified 79 new cases over two years and specifically analyzed temporal patterns.
A Brazilian study evaluating vestibular disorders in relation to climatic seasons (summer, autumn, winter, spring) found no significant differences among vestibular illnesses in relation to seasonal variations 2. The researchers concluded that no correlation existed between annual seasons and vestibular disorders in their environment.
Clinical Context
While vestibular neuritis is often associated with viral infections, which might suggest seasonal clustering:
Vestibular neuritis is characterized by acute onset of vertigo, nausea, and vomiting without hearing loss, often with evidence of recent or concurrent upper respiratory tract infection 3. The condition can occur in epidemics 3.
The exact etiology remains obscure despite the viral association 4. Possible causes include viral or other infectious agents, vascular disorders, or immune-mediated mechanisms 4.
The disease is described as a viral infection of the vestibular system leading to acute prolonged vertigo lasting 12 to 36 hours with decreasing disequilibrium over 4 to 5 days 5.
Clinical Implications
The absence of seasonal variation means that clinicians should maintain equal vigilance for vestibular neuritis throughout the year 1, 2. The diagnosis relies on clinical presentation rather than temporal patterns, with key features including: