Is there a relationship between motion sickness and benign paroxysmal positional vertigo (BPPV)?

In general, motion sickness may or may not be related to benign paroxysmal positional vertigo (BPPV), depending on the specific condition. The detailed analysis is as follows:

1. Related

BPPV may be caused by acute brain injury, bacterial infection, vertebrobasilar circulatory disorders, or other factors, which can affect the position of otoliths and lead to symptoms such as dizziness, a floating sensation, and vomiting. During car travel, changes in body position may easily stimulate the otoliths, worsening dizziness and causing unsteadiness while walking. Therefore, there can be an association between motion sickness and BPPV.

2. Not related

Motion sickness is a type of motion-related disorder, typically triggered by a conflict between the brain's motor commands and sensory feedback. Some theories suggest it results from sensory mismatch, neural incoordination, or excessive sensitivity of the vestibular organs. Thus, motion sickness is not necessarily caused by BPPV.

If patients experience discomfort, they should seek timely medical evaluation and receive targeted treatment to avoid delays in managing their condition.