Final answer:
Chronic hypertension disorders before pregnancy or before 20 weeks include pre-eclampsia, gestational hypertension, and chronic hypertension with superimposed pre-eclampsia.
Step-by-step explanation:
Chronic hypertension disorders that occur before pregnancy or before 20 weeks include:
- Pre-eclampsia: A disorder characterized by high blood pressure and damage to organs such as the liver and kidneys. It usually occurs after 20 weeks of pregnancy.
- Gestational hypertension: High blood pressure that develops during pregnancy but resolves after delivery.
- Chronic hypertension with superimposed pre-eclampsia: Pre-existing high blood pressure that worsens during pregnancy, leading to pre-eclampsia.
Gestational diabetes is a separate condition characterized by high blood sugar levels during pregnancy.