Hey DR,
Great questions... For starters, hyperparathyroidism may very well play a role in CH... although the primary culprit is more likely a vitamin D3 deficiency.
The come-down or taper off prednisone is always a bummer for cluster headache sufferers (CH'ers)... The beast usually comes back with a vengeance...
Prednisone is really only effective as a transitional preventative until you titrate up on another preventative like verapamil... Staying on it too long has some onerous side effects.
I loved prednisone because it kept my CH under control... unfortunately it was slowly destroying my endocrine system...
Knowing what I know now... I'll never take it again. Instead, I load up on vitamin D3 calcium, and the vitamin D3 cofactors...
Omega 3 Fish Oil isn't a critical component of the Anti-Inflammatory regimen... It has well known anti-inflammatory properties and it aids in vitamin D3 absorption... and that's a good reason to take it. However, that's as far as it goes... It's not on the critical path to preventing CH.
If your thyroid was surgically removed, you were likely prescribed a synthetic thyroid hormone as a replacement therapy...
You should have also been prescribed vitamin D3 and calcium... See:
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Unfortunately, there's no such hormone therapy for hypoparathyroidism... your remaining three parathyroid babies went out the the thyroid bath water... That said, the tradeoff between removing the thyroid containing the parathyroids to cut out the cancer and the resulting hypoparathyroidism was a good one. You can live with hypoparathyroidism...
The parathyroid hormone (PTH) signals the kidneys to metabolize serum 25(OH)D into 1,25(OH)2D3 that's needed to pull calcium from the gut to maintain bone mineral density (BMD) in what's called calcium homeostasis.
Fortunately studies have shown that people with with postthyroidectomy hypoparathyroidism actually experience an increase in BMD... See the following study:
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It's also fortunate, that 80% of the vitamin D3 metabolized to 25(OH)D in the liver is metabolized extrarenal (outside the kidneys so no PTH is needed) at the cellular level in the peripheral path of vitamin D3 metabolism to 1,25(OH)2D3...
This is the autocrine mode of vitamin D3 metabolism we think is responsible for the cluster headache preventative effect.
10,000 IU/day Vitamin D3 and 500 mg/day calcium along with the vitamin D3 cofactors: 400 mg/day magnesium, 10 mg/day zinc, 1 mg/day boron and vitamin A at RDA should be sufficient to help prevent your cluster headaches... At least you'll have an 80% probability of a favorable response...
If your PCP sees no issue with vitamin D3 therapy, that's great! Ask her for the lab test for 25(OH)D to confirm the vitamin D3 deficiency then start the Anti-Inflammatory regimen less the Omega 3 Fish Oil.
Regarding your research on the use of vitamin D3 as a preventative for cluster headache... it's spot on... You won't find any other sources of info on this topic. This site and a couple related cluster headache sites are the only source of information on the anti-inflammatory regimen, it's efficacy in preventing cluster headache and the causal relationship between a vitamin D3 deficiency and cluster headache.
I'm working on changing that, however I still need additional survey information from CH'ers who have tried this regimen.
You'll find the latest info on the Anti-Inflammatory Regimen supplements, dosing and vitamin D3 dosing strategies along with drug interactions and contraindications at the following link:
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This link also contains another link to the survey when you've been on this regimen for at least a month and had a second lab test for 25(OH)D.
Take care and please keep us posted.
V/R, Batch