Stress causes increase in blood pressure by activating sympathetic nervous system. You have not mentioned your age over here. Anyway, try to resolve your issues which are stressing you. Advice 1. Continue lisinopril 20 mg daily as suggested by your doctor 2. Take alprazolam 0.25 mg at bed time for 15 days 3. Regular exercise at least 30 minutes for 5 days in a week. The best types of exercise for lowering BP include walking, jogging, cycling, swimming or dancing. 4. Eating a diet that is rich in whole grains, fruits, vegetables and low-fat dairy products and skimps on saturated fat and cholesterol 5. Consume less salt 6. Avoid smoking, alcohol, coffee and caffeinated beverages 7. Lose extra weight if you are overweight and keep your body mass index between 19 and 25. BMI is calculated by formula BMI = Weight in Kilograms / (height in meters x height in meters) 8. Reduce your metal stress because stress activates sympathetic system and increases BP 9. Measure your BP regularly and be in touch with your doctor Thanks