hunger headaches?

hey i am dieting as most of you are and i get these HORRID headaches does anyone know what i could do to help them (besides eating lol) (advil doesnt work for me)

Sometimes they can be due to low blood sugar, but it's more commonly from dehydration.  Try drinking more water and see if they get better.  :)  Also, are you drinking less caffeine? That could do it too.

Might also be low in sodium, I tend to get headaches alot if I'm low... usually resolved with some pretzels.

How many calories are you consuming in a day? I had headaches when I wasn't eating enough AND when I drank diet ANYTHING.  I was doing the Slim Fast thing at the time and it really didn't work well for me as I just wasn't consuming enough calories. 

Hmm, i would guess a change in caffeine too (lots of people cut soda as one of the first things when starting to diet, so sudden lack of normal caffeine levels).