3 doctors weighed in:

Why do I throw up when I get motion sickness?

3 doctors weighed in
Dr. Dennis Diaz
ENT - Head & Neck Surgery
1 doctor agrees

In brief: 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.

In brief: 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.
Dr. Dennis Diaz
Dr. Dennis Diaz
Thank
Dr. Matthew Goren
Ophthalmology

In brief: A=A

That's what motion sickness is.
You get nauseous and often throw up.

In brief: A=A

That's what motion sickness is.
You get nauseous and often throw up.
Dr. Matthew Goren
Dr. Matthew Goren
Thank
Read more answers from doctors