There is surprisingly little medical literature in this area.
This is the only current item I have. Suggest you print it out for your docs and/or you can take it to a good library and they can obtain a full print of the article for nominal cost. If you are near a large-ish hospital they may have a medical library which could supply you.
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Cephalalgia. 2009 Jan 19.
Treatment of cluster headache in pregnancy and lactation.
Jüergens TP, Schaefer C, May A.
Department of Neurology, University of Regensburg, Regensburg, Germany.
Treatment of cluster headache in pregnancy and lactation. Cephalalgia 2009. London. ISSN 0333-1024
Cluster headache is a rare disorder in women, but has a serious impact on the affected woman's life, especially on family planning. Women with cluster headache who are pregnant need special support, including the expertise of an experienced headache centre, an experienced gynaecologist and possibly a teratology information centre. The patient should be seen through all stages of the pregnancy. A detailed briefing about the risks and safety of various treatment options is mandatory. In general, both the number of medications and the dosage should be kept as low as possible. PREFERRED TREATMENTS INCLUDE OXYGEN, SUBCUTANEOUS OR INTRANASAL SUMATRIPTAN FOR ACUTE PAIN AND VERAPAMIL AND PREDNISONE/PREDNISOLONE AS PREVENTATIVES. IF THERE IS A COMPELLING REASON TO TREAT THE PATIENT WITH ANOTHER PREVENTATIVE, GABAPENTIN IS THE DRUG OF CHOICE.
WHILE BREASTFEEDING, OXYGEN, SUMATRIPTAN AND LIDOCAINE FOR ACUTE PAIN AND PREDNISONE/PREDNISOLONE, VERAPAMIL, AND LITHIUM AS PREVENTATIVES ARE THE DRUGS OF CHOICE. As the individual pharmacokinetics differ substantially, adverse drug effects should be considered if unexplained symptoms occur in the newborn.
PMID: 19170693
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Given the complexity of this area, other sources recommend working with a headache specialist as well as your ob/gyn.
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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.