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Migraine in pregnancy

Researchers at the Cleveland Clinic investigated the risk of stroke associated with different estrogen doses in oral contraceptives (OCP) for individuals with migraines. The results of their study were recently published in the journal of the American Headache Society, Headache.

The overall stroke risk among OCP users in this study was low. Out of the 203,853 women aged 18-55 who used OCPs, 127 were confirmed to have had a stroke. The case group had a higher proportion of individuals diagnosed with migraines (34/127, 26.8%) compared to a control group of 635 women (109/635, 17.2%; p = 0.011). The risk of stroke was higher among those using OCPs with 30 mcg or more of estrogen compared to those using OCPs with less than 30 mcg. Having a personal history of migraines increased the likelihood of stroke compared to those without migraines. There was no significant increase in stroke risk among those with migraine with aura, but migraine without aura did increase the risk.

Interestingly, previous studies have suggested the opposite—that migraine with aura carries a higher stroke risk compared to migraine without aura. The researchers speculate that this discrepancy could be because patients with migraine with aura are rarely prescribed OCPs, and the number of such patients in this study was small.

Traditionally, young and healthy women diagnosed with migraine with aura have been advised against using estrogen contraceptives due to concerns about increased stroke risk compared to those without aura. However, the risk of unintended pregnancies should be weighed against the risk of a stroke. The authors emphasize the need for proper patient education and shared decision-making when it comes to starting contraceptives in women with a history of migraines, including those without aura. OCP formulations with less than 30 mcg of estrogen are preferred to minimize the risk of stroke.

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Thank you, Lisa Robin Benson for a kind review of my book. This is a video review on the Migraine.com website.

Many of my colleagues have written very positively about my book. It is even more gratyfing to hear that patients and patient advocates also find it useful.

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Two out of three women stop having migraines during pregnancy, especially in the second and third trimester. The difficult question is how to treat migraines in the first trimester and in women whose migraines do not improve or get worse in pregnancy.

Acetaminophen (Tylenol, paracetamol) is considered safe in pregnancy and that is what many women take for migraines and other pains. Unfortunately, acetaminophen is usually ineffective for severe migraines. It is also not as safe as many physicians and the general public thinks. Several studies indicate that acetaminophen increases the risk of attention-deficit hyperactivity disorder (ADHD) and with heavy use, possibly even autism spectrum disorder.

Some obstetricians strongly advise against taking any migraine medications. However, the stress of an acute migraine attack with severe pain, vomiting, and dehydration is likely to have a deleterious effect on the fetus. A Danish study of 22,841 pregnancies among women with migraine showed that untreated migraine leads to an increased risk of low birth weight, preterm birth, and cesarean delivery.

A report just published in the journal of the American Medical Association (JAMA) examined “Association of Maternal Use of Triptans During Pregnancy With Risk of Attention-Deficit/Hyperactivity Disorder in Offspring”.

The study used the data from the Norwegian Mother, Father and Child Cohort Study, linked to the Medical Birth Registry of Norway, the Norwegian Patient Registry, and the Norwegian Prescription Database using the mother’s personal identification number. The conclusion of this large and rigorous study was: “This cohort study found no association between prenatal triptan exposure and ADHD diagnosis or ADHD symptoms at 5 years of age. This study adds to the growing literature on the safety of triptan use during pregnancy and expands it to an important neurobehavioral outcome.”

Triptans have been available without a prescription in all European countries for over a decade. In the US, triptans are available only by prescription. This is one of the reasons for the perception of acetaminophen as being more benign than sumatriptan and other triptans. The opposite is likely to be true. If you are a pregnant woman suffering from severe migraines, ask your doctor for a prescription for sumatriptan.

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