Differential Diagnosis of Hypertension after 20 week of pregnancy

When a pregnant woman shows up with hypertension in the third trimester or even after the 20th week of pregnancy, on the top of our list we need to think of:
- Pre-eclampsia (Proteinuria >300 mg)
- Transient Hypertension (Is not accompanied by Proteinuria or it is less than 300 mg)

Ofcourse we need to consider other causes like eclampsia, HELLP Syndrome, etc, as well, however these diagnosis need specific other criteria that should have been mentioned in the exam. (Seizure, Hemolysis, Elevated Liver Enzymes, Low Platelet, …)