The definition of a biennium is a period of two years. Your two-year cell phone contract is an example of a biennium. noun.
Symptoms of vestibular neuritis are characterised by a sudden onset of a constant, intense spinning sensation that is usually disabling and requires bed rest. It is often associated with nausea, vomiting, unsteadiness, imbalance, difficulty with vision and the inability to concentrate.
Inner ear infections that cause vestibular neuritis or labyrinthitis are usually viral rather than bacterial. Although the symptoms of bacterial and viral infections may be similar, the treatments are very different, so proper diagnosis by a physician is essential.