A BP that swings from 140/100 down to 120/80 within 20 minutes of resting, along with evening anxiety and lightheadedness, usually points to a stress related spike rather than ongoing high BP. True hypertension tends to stay raised even at rest.
Next Steps
Track your BP twice daily for a week, morning and evening, before and after rest, and share the readings with a general physician. Cutting caffeine and improving sleep often settles this kind of pattern too.
Health Tips
See a doctor sooner if the readings stay high even after resting, or if you feel breathless or faint.