Which condition occurs when movement triggers vertigo due to stimulation of inner ear receptors or misinterpretation of visual input and motion?

• A. Motion Sickness
• B. Otitis media
• C. Epistaxis
• D. Nasal polyps

Answer: (A)

Movement triggers vertigo when the brain receives conflicting signals about motion from the vestibular system in the inner ear and the visual system. The inner ear has receptors in the semicircular canals that detect head rotation and movement. If you’re moving but your eyes perceive stillness (or vice versa), the brain can’t reconcile the signals, leading to dizziness or spinning sensations and often nausea. This mismatch is what causes motion sickness, especially in cars, boats, planes, or simulators.

The other conditions don’t involve this sensory conflict. Otitis media is an infection of the middle ear and causes pain or hearing issues rather than motion-triggered vertigo. Epistaxis is a nosebleed, and nasal polyps are growths in the nasal passages; neither relates to the vestibular-triggered vertigo described here.