The doc's intentions are good but his treatment suggests he is not well trained in headache. Pain meds are of no value for Cluster; most of us use Prednisone to rapidly abort attacks (within a day) while--at the same time--starting a preventive med which reduces the intensity and frequency of attacks for the long haul.
Print out the PDF file for your education and use as a tool to discuss treatment options with the doc.
Acutally, finding a headache specialist is the best route, if you have that option. If you can, avoid general neurologists because, as a group, they also lack deep training in headache.
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LOCATING HEADACHE SPECIALIST
1. Search the OUCH site (button on left) for a list of recommended M.D.s.
2. 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.
3. 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.
4. Multimedia File Viewing and Clickable Links are available for Registered Members only!! You need to

or

On-line screen to find a physician.
5. 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.
6. 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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In terms of helping your husband, there is little you can do in terms of direct treatment/help. Doing the search for a specialist is within your ability but during an attack--do what he asks for--SILENCE, often darkness, suggest (when not having an attack) that he try sitting upright in a supportive chair, breath slowly and deeply, and relax muscles as much as possible. Works for some of us. But don't talk, suggest, offer help,etc.
Hope he will read the article (PDF) for personal knowledge is essential.