Pregnancy Induced Hypertension (PIH): Symptoms, Causes & Concerns Gestational hypertension or PIH is defined as having blood pressure greater than 140/90 on two occasions at least 6 hours apart. It is also termed “toxaemia,” “gestational hypertension,” or preeclampsia.” For more information - https://pregajunction.com/blog/pregnancy-induced-hypertension-pih-symptoms-causes-concerns/