You see, nausea and headaches could be caused by eating something poisonous / not proper for consume, and depending on how bad it is your brain can interpret it as “Whatever is causing this has to go!” So it tries to expel what could be causing the problem through vomit. For example that is why some people feel nausea while on long rides and why usually you also feel nauseated if you try to read or use your phone in a trip such as this. Your body might even interpret the whole “I am not moving, but the ouside is” as hallucinations, something that can also be caused by eating something improper. Hope i could help.
There are a few ways potentially, between head-first or gut-first. Gut problems like from bad microflora due to taking antibiotics, or eating something inflammatory makes your system pressure go up and can cause headaches and migraines, also hurt tummies of course. In some cases of headache-first, the area if your brain that experiences the headache is close the the zone that perceives gut pain, and it can feel like you’re sick even when nothing’s wrong. Also the vertigo/dizziness aspects others mentioned.
Technical reference: https://thejournalofheadacheandpain.biomedcentral.com/articles/10.1186/s10194-020-1078-9
Not a scientific view but my own, very personnal interpretation of why I throw up when I’ve got a migraine.
I feel like my body thinks that something’s not right at all, and does everything it can to fix it, whatever the problem. Almost every migraine I get tends to come with a slight fever, with exhaustion, some dizziness, and overall uneasyness. It turns out one of the simplest thing to purge in a human body is the guts. Although I don’t throw up very often, every time I do I immedaiately feel a bit better, like if my body crossed the “ate something bad” from the suspect list.
Usualy, the pain goes away after a good night’s sleep.
We actually found out last week that my moms lung cancer had spread to the brain. They found a golf ball
sized tumor on the bottom right of her skull, on he cerebellum. This area of the brain controls balance, walking, fine motor skills, etc. This area of the brain can also cause vomiting/nausea if pressure/swelling occurs, thus why the tumor had caused 2 months of extreme vomiting and nausea for my mom. Just figured I’d share the info just in case!
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