A jump from 115/84 to 166/107 is a real rise, especially since it stayed high across three checks five minutes apart. This needs same-day evaluation, not a wait-and-watch approach.
Next Steps
Please see a general physician or visit the nearest clinic today so the reading can be confirmed. The cause could be stress, pain or a missed dose if you're on any blood pressure medicine. Rest and avoid caffeine until you're seen.
Health Tips
Go to the emergency department straight away if you get a severe headache, blurred vision, chest discomfort or breathlessness.