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Why do zinc pills give me a headache? 

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in the cortex), a peripherally acting drug can intercept/prevent the headache.
These results indicate the developing response to zinc deficiency induced by a zinc-deficient diet.
In other forms of headache, such as tension or muscle contraction headache, post-traumatic headache, inflammatory headache and trigeminal neuralgia, pizotifen has generally had little effect.
These results are consistent with studies demonstrating a loss of DNICs in patients that suffer from chronic daily headache and may partially explain why overuse of medication used to treat migraine can induce headaches.
Journal ArticleDOI
01 Oct 1992-Medical Hypotheses
34 Citations
This unifying concept can not only account for headache, but also the prostaglandins, leukotrienes, platelet activating and vasoactive substances linked with headache, the varied symptoms associated with headache and the high incidence of headache with depression, infectious disease, trauma and in premenopausal women.
Headache is the commonest cause for consulting a neurologist.
A review of the literature suggests that some overlaps exist in the pathophysiology between SS and headache disorders, including medication-overuse headache.
Headache may also be a symptom.
The results suggest that NTG headache in non-migraineurs may share mechanisms with migraine headache.
Conclusion Despite similarities with migraine headache, cilostazol-induced headache in healthy volunteers does not respond to sumatriptan.
Zinc supplementation improved hemoglobin response and normalized serum zinc concentration.
In the headache sufferer, these adaptations could lead to medication overuse headache.
The authors present a new model of zinc currents and zinc toxicity that offers expanded opportunities for zinc-selective therapeutic chelation interventions.

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