a case-series study of cerebral venous thrombosis in women using short course oral ‎contraceptive

background: we report a case series of cerebral vein thrombosis (cvt) in women who used oral contraceptive pill (ocp) in the muslims ramadan and fasting month. methods: this study was a retrospective case series of 9 patients with diagnosis of cvt, who admitted in the neurology ward of tohid hospital of sanandaj, iran, in july-august 2014-2015. results: patients had no history of thrombosis before. they were treated with oral contraceptive more than 1 month to be able to fast during ramadan. they did not have other possible risk factors for cvt. a headache was the most common in 9/9 patients (100%) followed by vomiting and vertigo. conclusion: we found that high rate of cvt in female population during ramadan indicates that it needs be considered as a specific risk factor and should be considered by healthcare system.