Quote:I on the other hand says that the TN is only a small player in the picture of CH. It is the pineal gland and the hypothalamus we should focus on. If those 2 glands are malfunctioning, then no matter how much we "nurture" the TN its going to fire abnormally in a hit.
That is a common perspective and there are many researchers focused on the hypothalamus. I don't deny the importance of the hypothalamus, but think that the trigeminal itself is important. Reasons include:
1) Non-Hypothalamic cluster headache documented by Rozen.
2) Phantom clusters - all the autonomic symptoms, no pain from trigeminal.
3) Research that suggests that problems with trigeminal may be common in CH, and that improvement is seen if possible to treat trigeminal lesions.
4) Nerve blocks - they don't involve injections to the hypothalamus.
5) Myofascial therapy can be an effective treatment.
6) Association of clusters with sinus issues, TMJ jaw problems.
7) Immunology - trigeminal nerve more likely to be affected than hypothalamus by epstein-barr virus or other viruses that are more common in CH.
1) Rozen's work on this is preliminary, but worth considering, even if it is a minority of cases.
2) I have experienced phantom clusters, and I believe it is the hypothalamus going haywire, but the trigeminal does not respond by releasing pain inducing substances. If this is true, then it offers treatment options for the pain - not a complete therapy, but less excruciating agony.
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4) Nerve blocks reduce peripheral inputs to other areas; the most effective is a sphenopalatine, which is part of the trigeminal nerve.
5) Myofascial therapy - recently show to help with CH. A reduction of peripheral inputs to trigeminal from muscles in head makes the most sense, the hypothalamus is not directly affected by such procedures, but the trigeminal is.
6) A ten year follow-up study on endonasal surgery for clusters found about 1/3 of patients who got surgery went into remission and were there for ten years, about 1/3 displayed marked improvement. The hypothalamus-centered theory cannot explain this. Not everyone with clusters has such contact points, but those who do seem to benefit benefit from treating them. Other related problems include chronic sinusitis, tmj ... my impression is that they are more common in CH, although there is not a lot of data on that.
So I am not trying to erase the role of the pineal and hypothalamus - they are important and clearly contribute. That is a very good explanation of the timing that many of us have for headaches. The hypothalamus is a source of input to the trigeminal that can make it scream. But I think the immediate source of the pain is the trigeminal behind the eye, and this is important. Sometimes the trigeminal can scream bloody cluster even when the hypothalamus is quiet, and sometimes the hypothalamus is hitting the trigeminal full blast, but the trigeminal does not scream.