Having been reading here for a year you've been exposed to several recurring bits of advice that need your attention:
1. Neurologists are often a poor source of help with Cluster because their training/experience with complex headache disorder is so limited. Reading into you comments leaves me wondering about your guy.
If at all possible, work with a headache specialist.
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LOCATING HEADACHE SPECIALIST
1. Yellow Pages phone book: look for "Headache Clinics" in the M.D. section and look under "neurologist" where some docs will list speciality areas of practice.
2. Call your hospital/medical center. They often have an office to assist in finding a physician. You may have to ask for the social worker/patient advocate.
3. Multimedia File Viewing and Clickable Links are available for Registered Members only!! You need to

or

; On-line screen to find a physician.
4. Multimedia File Viewing and Clickable Links are available for Registered Members only!! You need to

or

Look for "Physician Finder" search box. They will send a list of M.D.s for your state.I suggest using this source for several reasons: first, we have read several messages from people who, even seeing neurologists, are unhappy with the quality of care and ATTITUDES they have encountered; second, the clinical director of the Jefferson (Philadelphia) Headache Clinic said, in late 1999, that upwards of 40%+ of U.S. doctors have poor training in treating headache and/or hold attitudes about headache ("hysterical female disorder") which block them from sympathetic and effective work with the patient; third, it's necessary to find a doctor who has experience, skill, and a set of attitudes which give hope of success. This is the best method I know of to find such a physician.
5. Multimedia File Viewing and Clickable Links are available for Registered Members only!! You need to

or

NEW certification program for "Headache Medicine" by the United Council for Neurologic Subspecialties, an independent, non-profit, professional medical organization.
Since this is a new program, the initial listing is limited and so it should be checked each time you have an interest in locating a headache doctor.
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WHY A HEADACHE SPECIALIST IS RECOMMENDED
Headache. 2012 Jan;52(1):99-113.
Cluster headache in the United States of America: demographics, clinical characteristics, triggers, suicidality, and personal burden.
Rozen TD, Fishman RS.
THERE REMAINS A SIGNIFICANT DIAGNOSTIC DELAY FOR CLUSTER HEADACHE PATIENTS ON AVERAGE 5+ YEARS WITH ONLY 21% RECEIVING A CORRECT DIAGNOSIS AT TIME OF INITIAL PRESENTATION.
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2. Jumping around with different treatments doesn't give any single one the time to see if it's effective. You need a doc who starts one approach and then adjusts dosing over time to see the results. Significant variation in dosing and combinations of meds is not uncommon and so patience is essential.
3. Self-diagnosis and self-treatment isn't cool. Mixing the doc's Rs with vit D, etc. onlly confuses the pictures since you won't know which program is effecive, should there be improvement.
4. Imitex pills are the least effective form of this med for Cluster.
5. What you read here is often useful and helpful but NOT a substitute for a doc skilled in headache.