Flunarizine, at least in theory, should work because it's similar to verapamil in its actions.
From what I read on wikipedia, it blocks histamine receptors, which could in theory cause weird dreams.

B12 is actually effective for some people. Get tested for Prenicious Anemia, that can cause similar headaches to cluster.
I can't speak to a HBC but I would personally rather just stick with oxygen

RE: EEGs, from what I've read these are pretty much useless in diagnosing any type of headache because everyone gives off different electrical signals during a headache.

When I went for my nerve block, the doctors were interested in my use of O2 to abort, especially the use of a demand flow valve that delivers up to 60lpm. His remark was: that's like using a hyperbaric chamber. I told him the mask was a lot easier to purchase and make room for in my house. Get on O2 soonest, and procure a high flow regulator or demand flow valve. blessings. lance

PS I'm not sanguine about this docs knowledge concerning cluster headaches

Have even tried RUE and Coca Leafs... medicinal plants they use here, but..nothing ........am getting DESPERATE, but know this will pass...

yeah if you're getting desperate get LSD/Shrooms/LSA

Coca leaves could work in theory, I hear cocaine is a treatment for CH.

Guiseppi wrote on Oct 19^th, 2013 at 9:30pm:


   Cola makes you feel like a new man,  problem is the new guy wants another toot.  Yep,  from experience.

          Potter

I don't recall whether I suggested this one or not. In any case, print the abstract and give to your doc. He will at least recognize the source of legit medical material and can't reject it as only web material.
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Headache 2001 Sep;41(8):813-6 

Olanzapine as an Abortive Agent for Cluster Headache.


Rozen TD.
Department of Neurology, Jefferson Headache Center/Thomas Jefferson University Hospital, Philadelphia, Pa.

OBJECTIVE: To evaluate olanzapine as a cluster headache abortive agent in an open-label trial. BACKGROUND: Cluster headache is the most painful headache syndrome known. There are very few recognized abortive therapies for cluster headache and fewer for patients who have contraindications to vasoconstrictive drugs. METHODS: Olanzapine was given as an abortive agent to five patients with cluster headache in an open-label trial. THE INITIAL OLANZAPINE DOSE WAS 5 MG, AND THE DOSE WAS INCREASED TO 10 MG IF THERE WAS NO PAIN RELIEF. THE DOSAGE WAS DECREASED TO 2.5 MG IF THE 5-MG DOSE WAS EFFECTIVE BUT CAUSED ADVERSE EFFECTS. To be included in the study, each patient had to treat at least two attacks with either an effective dose or the highest tolerated dose. RESULTS: Five patients completed the investigation (four men, one woman; four with chronic cluster, one with episodic cluster). Olanzapine reduced cluster pain by at least 80% in four of five patients, and TWO PATIENTS BECAME HEADACHE-FREE AFTER TAKING THE DRUG. Olanzapine typically alleviated pain within 20 minutes after oral dosing and treatment response was consistent across multiple treated attacks. The only adverse event was sleepiness. CONCLUSIONS: Olanzapine appears to be a good abortive agent for cluster headache. IT ALLEVIATES PAIN QUICKLY AND HAS A CONSISTENT RESPONSE ACROSS MULTIPLE TREATED ATTACKS. IT APPEARS TO WORK IN BOTH EPISODIC AND CHRONIC CLUSTER HEADACHE.

PMID 11576207 PubMed

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Olanzapine has a brand name of "Zyprexa" and is a antipsychotic. Don't be put off by this primary usage. Several of the drugs used to treat CH are cross over applications, that is, drugs approved by the FDA for one purpose which are found to be effective with unrelated conditions--BJ.
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Since this abstract was first posted Zyprexa has appeared in some lists of recommended meds for CH. [BJ]

Can you get Reed Cannary or Mornign Glory Seeds where you live?

If not, PM ricardo and ask him about Ketamine. It's worked to help my shadows and for him it helps a lot.