Why do I constantly feel like I'm starving?

This has been a problem that has been going on for a couple of years, but it has just been getting worse now. Randomly, I'll get aches and shivers that are the exact same as I get when I am literally starving. The thing is, they always happen; even if I'm not hungry, or I just ate. It's pretty painful... show more This has been a problem that has been going on for a couple of years, but it has just been getting worse now. Randomly, I'll get aches and shivers that are the exact same as I get when I am literally starving. The thing is, they always happen; even if I'm not hungry, or I just ate. It's pretty painful and it usually makes it harder to talk/breathe. Does anyone know what this is?
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