too much magnesium causing migraines

Hi everyone, I live with mav myself 24/7,

Recently my 18-year-old niece has been suffering with constant migraine,

So I told her to get some magnesium and try it daily, she asked her Dr about it, and her Dr suggest she not try the magnesium, first have some allergy testing done as the Dr said her Migraine could be due to an overload of magnesium, what tha ?????

That this is common?

I've not heard of this problem.

If this is true, why would taking mag sups , help so well at high levels for us.

It just seems like a crock of you know what

Allergy testing is very very expensive hear in Australia, and my sister is a single mother of 4 children, who works.

Any help would be wonderful; I hate to see her in such pain.

Thank you so much in advance

Oh also.

P:s

For any one considering topamax.

I'm having some luck with my topamax, its been a hard and very slow titration, with some strange mood swings and heart wrenching moments, but I'm toughing it out, and feel things are getting better every day.

SE's seem to be easing as time passes.

Pretty good considering, I have persistent, every day migraine, and now I hardly notice them.

Best of health to you all.

jenny