Motion Sickness
Medical Author:
Melissa Conrad Stöppler, MD, Chief Medical Editor
Melissa Conrad Stöppler, MD, Chief Medical EditorMelissa Conrad Stöppler, MD, is a U.S. board-certified Anatomic Pathologist with subspecialty training in the fields of Experimental and Molecular Pathology. Dr. Stöppler's educational background includes a BA with Highest Distinction from the University of Virginia and an MD from the University of North Carolina. She completed residency training in Anatomic Pathology at Georgetown University followed by subspecialty fellowship training in molecular diagnostics and experimental pathology. Medical Editor:
Charles Patrick Davis, MD, PhD
Charles Patrick Davis, MD, PhDDr. Charles "Pat" Davis, MD, PhD, is a board certified Emergency Medicine doctor who currently practices as a consultant and staff member for hospitals. He has a PhD in Microbiology (UT at Austin), and the MD (Univ. Texas Medical Branch, Galveston). He is a Clinical Professor (retired) in the Division of Emergency Medicine, UT Health Science Center at San Antonio, and has been the Chief of Emergency Medicine at UT Medical Branch and at UTHSCSA with over 250 publications.
Motion Sickness OverviewMotion sickness (kinetosis) is the experience of unpleasant symptoms, predominantly nausea, during real or perceived motion. It is most commonly observed in boat travel (seasickness), although any type of travel or motion can induce motion sickness. Other examples of motion or travel sickness include car sickness and air sickness. Motion sickness is considered to be a form of dizziness and can be induced in most normal individuals. It is not considered to be a specific disease state. Although motion sickness can be uncomfortable, it is typically not a sign of a serious problem unless prolonged vomiting leads to dehydration or electrolyte abnormalities. Motion Sickness CausesThe cause of motion sickness is complex and not fully understood, but most experts believe that it arises due to conflicts in sensory input to the brain. The brain senses motion through different signaling pathways from the inner ear (sensing motion, acceleration, and gravity), the eyes (vision), and the deeper tissues of the body (proprioceptors). When the body moves involuntarily, such as when riding in a vehicle, there may be conflict among these different types of sensory input to the brain. The sensory apparatus in the inner ear seems to be most critical in the development of motion sickness. Studies have shown that some people are more likely than others to experience motion sickness.
Viewer Comments & ReviewsMotion Sickness - TreatmentThe eMedicineHealth physician editors ask:What was the treatment for your motion sickness? Motion Sickness - SymptomsThe eMedicineHealth physician editors ask:What were the symptoms of your motion sickness? |
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Motion Sickness
Benign Paroxysmal Positional Vertigo »
Benign Paroxysmal Positional Vertigo Overview
Benign paroxysmal positional vertigo (BPPV) is one of the most common causes of vertigo, the symptom that describes the feeling of intense spinning of the head. BPPV describes the situation where the spinning sensation lasts only a few minutes and often stops by itself. There may be recurrent episodes without any specific reason or cause.
While there are many causes of vertigo, BPPV is the term that is used for vertigo that comes and goes (paroxysmal), without a specific associated illness (benign). It is often a frustrating situation for patients because the episodes are frightening and difficult to predict. However, it is related to the labyrinth system inside the inner ear.
The labyrinth system is located in the inner ear and is responsible for maintaining balance in the body. There are three semicircular canals that contain nerve endings and fluid that tell the body where it is in relation to gravity, acti...
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