Seizures that occur around the menstrual cycle are called catamenial epilepsy. Studies show that changes in seizures are most often in the. Catamenial epilepsy is defined as a pattern of seizures that changes in severity during particular phases of the menstrual cycle, wherein. Epilepsy is a chronic neurological condition characterized by recurrent seizures. Catamenial epilepsy is a subset of epilepsy, which includes women whose.

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The mechanism by which estradiol increases neuronal excitability is not clearly understood; however, in experimental studies, there are many factors influencing effects of estrogen on seizure susceptibility, such as sex, age, the hormone species natural or syntheticregional distribution of hormone receptors, treatment duration, time interval for initiation of hormonal treatment following gonadal removal, route of administration, as well as the dose.

During menopausethere are drastic changes in the production of gonadal hormones. Progestin receptors mediate progesterone suppression of epileptiform activity in tetanized hippocampal slices in vitro. Interestingly, the standard hormone replacement therapy which includes estrogen and a progestin can be postulated to have an effect on seizures in postmenopausal women with epilepsy that is more evident than that of oral contraceptives in cycling women with epilepsy, because reproductive hormone levels during menopause are low and unchanging.

Terasawa E, Wpilepsy PS. Acetazolamide, a carbonic anhydrase inhibitor, may be effectively used to treat catamenial seizures. Belelli D, Lambert JJ. This is especially the case for those who experience complex partial seizures.


Foldvary-Schaefer N, Falcone T. Seizure exacerbation associated with inhibition of progesterone metabolism. The effects of estrogen, progesterone, and ionized calcium on seizures during the menstrual cycle of epileptic women. Treatment of seizures with medroxyprogesterone acetate: Estrogens effects on the brain: During perimenopause, women with catamenial epilepsy generally experience an increase in seizure frequency, and HRT use does not change this likelihood.

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In a study, it was found that patients with C1 pattern of catamenial epilepsy had overall lower progesterone levels than healthy controls during the M phase. In a small percentage of women, catamenial seizures may occur only during the days just before their periods; for others, during the period itself.

Catamenial Seizures

Effects of progesterone Animal and humans studies 3839 clearly indicate that catamenial seizures are associated with a rapid decline catameniial progesterone immediately before, during, and after menstruation.

Therefore, this drug can only be administered on an intermittent basis, which is appropriate for catamenial epilepsy but not for ordinary seizure prophylaxis. Epielpsy fact, 1,5-benzodiazepine clobazam, administered intermittently, has been used to treat catamenial seizure exacerbations over long periods of time with good results.

Clomiphene therapy in epileptic women with menstrual disorders. Daily epllepsy estradiol and progesterone levels over the menstrual cycle and their relation to premenstrual symptoms.


Acta Endocrinol Copenh ; 81 1: Dana-Haeri J, Richens A. Hormonal therapy Because progesterone has mainly been shown to have anticonvulsant effects, and because women with catamenial epilepsy under study often had inadequate luteal-phase or anovulatory cycles, it can be hypothesized that progesterone, progesterone metabolites, or estrogen antagonists may be used in conjunction with current antiepileptic medications, to treat these patients.

Catamenial epilepsy – Wikipedia

The menstrual phase is characterized by drastic decreases in progesterone and estrogen levels. Estrogen and ovariectomy regulate mRNA and protein of glutamic acid decarboxylases and cation-chloride cotransporters in the adult rat hippocampus. Estrogens have proconvulsant and epileptogenic properties in animals and humans.

In study by El-Khayat et al. Epilepsy cqtamenial a chronic neurological condition characterized by recurrent seizures. About Epilepsy What is Epilepsy? Reproductive hormonal changes and catamenial pattern in adolescent females with epilepsy. Some women with epilepsy appear to be at increased risk of ovulatory dysfunction.

Diagnosis and management of catamenial seizures: a review

In animal models, progesterone has been found epilesy reduce neuronal firing and decrease spontaneous and induced epileptiform discharges.

Redei E, Freeman EW. The primary measure of antiepileptic activity was the duration of treatment prior to withdrawal from the study.