Background Reproductive endocrine disorders are more commonamong women with epilepsy than among normal women. These disordershave been attributed to epilepsy itself, but could be relatedto antiepileptic-drug therapy.
Methods We studied 238 women with epilepsy who were seen regularlyat the Outpatient Department of the University Hospital, Oulu,Finland. Their mean age was 33 years (range, 18 to 45), andthe mean duration of therapy was 9 years (range, 0 to 31). Twenty-nine(12 percent) were treated with valproate, 120 (50 percent) withcarbamazepine, 12 (5 percent) with valproate and carbamazepine,and 62 (26 percent) with other medications; 15 (6 percent) wereuntreated. Vaginal ultrasonography was performed to determineovarian size, and serum sex-hormone concentrations were measuredin 41 women with epilepsy and menstrual disturbances, 57 womenwith epilepsy and regular menstrual cycles, and 51 normal women.
Results Menstrual disturbances were present in 13 of the womenreceiving valproate alone (45 percent), 3 of the women receivingvalproate in combination with carbamazepine (25 percent), 23of the women receiving carbamazepine (19 percent), and 8 ofthose receiving other medications (13 percent). Forty-threepercent of the women receiving valproate had polycystic ovaries,and 17 percent had elevated serum testosterone concentrationswithout polycystic ovaries; 50 percent of the women receivingvalproate and carbamazepine had polycystic ovaries, and 38 percenthad elevated serum testosterone concentrations without polycysticovaries. Eighty percent of the women treated with valproatebefore the age of 20 years had polycystic ovaries or hyperandrogenism.
Conclusions Menstrual disturbances, polycystic ovaries, andhyperandrogenism are often encountered in women taking valproatefor epilepsy.
Source Information
From the Departments of Neurology (J.I.T.I., V.V.M.), Obstetrics and Gynecology (T.J.L., K.T.S.J.), and Clinical Chemistry (A.J.P.), University of Oulu, Oulu, Finland.
Address reprint requests to Dr. Isojarvi at the Department of Neurology, University of Oulu, SF-90220 Oulu, Finland.
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