Causes of acute labyrinthitis

A bacterial infection is a less common but more urgent cause, particularly when infection spreads from the middle ear or nearby tissues.

The labyrinth contains structures for balance and hearing. Inflammation can disrupt the balance signals sent to the brain and may affect hearing, producing abrupt spinning vertigo, imbalance, nausea, hearing change or ringing in an ear. Symptoms can begin after a cold-like illness even when the respiratory symptoms are already easing.

Clinicians also consider vestibular neuritis, which affects the balance nerve and generally does not cause new hearing loss, as well as migraine, middle-ear disease, medicine effects and neurological causes. The symptom pattern and ear and neurological examinations guide the distinction; the exact infectious trigger is not always identified.

Arrange medical assessment for a first severe episode of continuous vertigo, especially if hearing has changed. Until assessed, sit or lie down when spinning starts, rise slowly, keep walkways clear and avoid driving, ladders or machinery. Small, regular sips can help if nausea makes drinking difficult.

Tell the clinician about recent colds, ear pain or discharge, fever, head injury, migraine and new medicines. Mention whether the sensation is continuous or triggered by head movement, and whether one ear has reduced hearing or noise. Those details help narrow the cause.

Call emergency services for vertigo with facial droop, one-sided weakness or numbness, trouble speaking, new double vision, collapse, a sudden severe headache, inability to stand, or new severe loss of coordination. Seek same-day care for sudden hearing loss, high fever, severe ear pain, swelling behind the ear, repeated vomiting or signs of dehydration.

You may want to ask whether the findings fit labyrinthitis or another cause of vertigo, whether your hearing should be tested, what can control nausea safely, and when it is reasonable to drive or return to work. If symptoms persist, ask whether balance rehabilitation or specialist review would help.