Assertion: nausea's cause | /r/HasProperty | head trauma
Facets:
Source sentences:
text: Most cases of BPPV have no known causes, but possible causes include head trauma, whiplash injury, migraines, inner ear problems, Meniere's disease and vestibular neuritis.
text: The exact cause of Meniere's disease is unknown but possible causes include head trauma, viral infection of the inner ear, allergy, migraine and hereditary factors.