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Doctor insights on: Why Do People With Motion Sickness Throw Up

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Dr. Geoffrey Rutledge
221 doctors shared insights

Motion Sickness (Definition)

Motion-sickness is a symptom where one feels sick to his stomach because there is a discrepancy in his visual stimuli and the stimuli perceived by his ...Read more


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Why do I throw up when I get motion sickness?

Why do I throw up when I get motion sickness?

Vomit center: There are several neural connections present to help maintiain our balance. Unfortunately one of those balance connections goes through the "vomit center" in the brain stem. Motion sickness is due to sensory conflict (incongruous information from different sensory systems). When this sensory conflict occurs, it triggers an assortment of responses of which vomiting is one. ...Read more

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Why do we throw up when we get motion sickness?

Why do we throw up when we get motion sickness?

Motion sickness: One theory is that it is a defense mechanism against neurotoxins. When we feel motion but can't see it, the inner ear transmits to the brain that it senses motion, but the eyes tell the brain that everything is still. As a result the brain concludes that one of them is hallucinating & that the hallucination is due to poison ingestion. The brain responds by inducing vomiting to clear the toxin. ...Read more

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Major airplane motion sickness. Have to lean against window with eyes closed. If open eyes everything spins and throw up. Why?

Major airplane motion sickness. Have to lean against window with eyes closed. If open eyes everything spins and throw up. Why?

Conflicted Brain: On a plane vestibular system of the inner ear senses motion. However, if we look around we see a stationary insides of a plane. This is a confusing torture to the brain which tries to balance the conflicting date. Some theorize the brain decides it is therefore hallucinating from a poison and starts the vomiting in case of potential toxins. Closing your eyes spares the brain this conflict. Odd! ...Read more

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I read, people with motion sickness , we can give them "beta blockers" before the journey, can we ?

I read, people with motion sickness , we can give them "beta blockers" before the journey, 
can we ?

Not standard therapy: Since beta blockers can actually increase feelings of malaise as well as cause low blood pressure, unless anxiety is a major cause, this would not be first-line. Over-the-counter medicines like Meclizine (marketed in the U.S. As bonine) and use of ginger (as capsules or just crystallized ginger, which is also delicious!) work pretty well for most people. ...Read more

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Why do I have motion sickness?

Why do I have motion sickness?

You were built that : way. The condition is probably hereditary. See http://omim.org My wife and daughter are affecte. Neither can read in a car and I must drive very smoothly. Boats were hell. Conventional medicine is irrational. Dramamine (dimenhydrinate) or other strong antihistamines must be taken BEFORE nausea or it is ineffective, but causing drowsiness and a warning not to drive. Scopolamine patches work, BUT (see comment) ...Read more

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What causes severe motion sickness?

Motion sickness: Cause is still debated but it is basically a conflict between sensory systems. For example, car sickness is caused by your eyes (which are looking at interior of car and environment is not moving) whereas the fluid in your ear (maintains balance) feels motion of the car. ...Read more

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What works to cure motion sickness?

What works to cure motion sickness?

Motion sickness: Some techniques include looking straight in the direction of the travel when in a car & if night-time close your eyes or nap, chew gum, fresh cool air, wearing a special eyewear called viban, & medications such as dramamine (dimenhydrinate) & meclizine, scopolamine transdermal patch, promethazine, ginger as crystals or tea. ...Read more

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What happens once you have motion sickness?

You will feel ill: Motion sickness occurs when your equilibrium system is overwhelmed. If you are traveling by plane, sit over the wings, if traveling by car or bus, sit in the front and look ahead and as far at the horizon as possible. Symptoms, which include nausea, vomiting, dizziness and headache, will subside once you are out of a moving vehicle. ...Read more

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Dr. Oscar Novick
2,118 doctors shared insights

Vomiting (Definition)

Nausea is the sensation of having an urge to vomit. Vomiting is forcing the contents of the stomach up through the esophagus and ...Read more