Pre-eclampsia is the arterial hypertension brought about by pregnancy. It occurs because the placenta creates some substances that contribute to obstruct arteries. Some signals of pre-eclampsia are: high blood pressure, swelling that does not disappear and an excessive amount of proteins in the urine.
To have high blood pressure does not necessarily mean to undergo pre-eclampsia. Your doctor will control it in each consultation and only when there is a worrisome decomposition could we speak of this disease.
It can bring about hypertensive crises to the mother, as well as hepatic or renal insufficiency, alterations of the coagulation and even convulsive or comatose reactions called eclampsia. In the baby it can produce a diminution of its growth or other complications like the placental loosening.