Tehran University of Medical Sciences Iranian Journal of Public Health 2251-6085 45 4 2016 04 27 531 534 Shahriar SAHRIARIAN Maternal-Fetal-Neonatal Research Center, Tehran University of Medical Sciences, Tehran, Iran Parvin AKBARI Maternal-Fetal-Neonatal Research Center, Tehran University of Medical Sciences, Tehran, Iran Elahe AMINI Breastfeeding Research Center, Tehran University of Medical Sciences, Tehran, Iran Hosein DALILI Breastfeeding Research Center, Tehran University of Medical Sciences, Tehran, Iran Tahereh ESMAEILNIA SHRIVANY Maternal-Fetal-Neonatal Research Center, Tehran University of Medical Sciences, Tehran, Iran Nikoo NIKNAFS Maternal-Fetal-Neonatal Research Center, Tehran University of Medical Sciences, Tehran, Iran Mamak SHARIAT Maternal-Fetal-Neonatal Research Center, Tehran University of Medical Sciences, Tehran, Iran Vafa GHOR­BAN SABAGH Maternal-Fetal-Neonatal Research Center, Tehran University of Medical Sciences, Tehran, Iran 2016 04 27 2016 04 27 Protein S (PS) is an antithrombotic plasma protein that plays essential roles in limiting thrombus formation in the anticoagulant system. Protein S deficiency is related with recurrent thrombosis. Here, the authors report a case of a term neonate with severe PS deficiency in year 2015, Imam Hospital, Tehran, Iran, that had seizures and intraventricular hemorrhage (IVH) since the age of 3 days. Nine-month follow-up did not show any developmental problems and MRI showed no hemorrhage.   https://ijph.tums.ac.ir/index.php/ijph/article/view/6584 https://ijph.tums.ac.ir/index.php/ijph/article/download/6584/5373