How high does blood pressure have to be to be an emergency?

You get the most from this site when you provide detailed background information followed by your question. Patient age/general health and other factors influence the urgency of any BP management. You are welcome to start over. Posts are not linked so each needs all relevant info.

There is not one number. Visit this site for information on hypertensive emergency: https://www.ncbi.nlm.nih.gov/books/NBK470371/#:~:text=A%20hypertensive%20emergency%20is%20an,%2C%20aortic%20dissection%2C%20and%20eclampsia.

The level of the blood pressure sometimes is not as important as the rate of the rise in BP. Someone whose usual BP is 130/80 & suddenly rises to 170/100 may experience severe symptoms whereas someone with a constant BP of 160 may tolerate a rise to 200 without symptoms. However, most consider 180/120 to constitute an emergency. I have treated many patients outside the hospital with higher BP's