According to webMD it is definitely tumor

One time, I saw someone on Reddit say “if you’re craving something but you don’t know what, it’s almost always water.” I’ve always been pretty well hydrated, but I’ve followed that guidance since then and I can’t think of a single time it failed me.

I’ve got all of that but a brain tumor and I don’t get headaches.

You might want to see a doctor

Today it’s from wildfire smoke inhalation. But most days it’s water, yes.

Don’t forget electrolyte headaches

IT’S NOT A TUMAH!

For me it’s usually a hangover.

It is I.