> ## Documentation Index
> Fetch the complete documentation index at: https://docs.sonohealth.com/llms.txt
> Use this file to discover all available pages before exploring further.

# White-Coat and Masked Hypertension: Why Home Readings Matter

> What white-coat and masked hypertension are, why they matter for your real cardiovascular risk, and how home blood pressure monitoring reveals them.

Have you ever had a high reading at the doctor's office but normal numbers at home — or the reverse? These mismatches have names, they're common, and they're one of the strongest reasons to monitor your blood pressure at home.

<Note>
  Home monitoring helps reveal these patterns, but interpreting them is your doctor's job. Bring your home log to appointments so your care team can assess your true risk.
</Note>

## What is white-coat hypertension?

White-coat hypertension is when your blood pressure reads high in a clinical setting but is normal at home. The "white-coat effect" — anxiety or stress in a medical office — temporarily raises your reading. It's extremely common, and it's a major reason a single office measurement can be misleading.

## What is masked hypertension?

Masked hypertension is the opposite and more concerning pattern: **normal** readings at the office but **high** readings at home or during daily life. Because it hides during checkups, it can go undiagnosed and untreated, leaving cardiovascular risk unaddressed. Home monitoring is often the only way to catch it.

## Why these patterns matter

Your real risk is driven by your blood pressure during everyday life, not by one anxious moment in a waiting room. White-coat readings can lead to over-treatment if taken at face value, while masked hypertension can lead to dangerous under-treatment. Capturing readings in your normal environment gives a far more accurate picture.

## How to capture a useful pattern

Take readings at [consistent times](/blood-pressure/how-to-measure-at-home), morning and evening, using correct technique and a [validated upper-arm monitor](/blood-pressure/upper-arm-vs-wrist). Keep a log over one to two weeks and share it with your doctor, who may also recommend 24-hour ambulatory monitoring to confirm the pattern.

SonoHealth's BPpro and BPMAX upper-arm monitors make this kind of consistent home tracking straightforward — see them at [SonoHealth.com](https://sonohealth.com/shop/).

***

**Related:** [Home Monitoring Guide](/blood-pressure/overview) · [Normal Blood Pressure Ranges](/blood-pressure/normal-blood-pressure-by-age) · [How to Measure at Home](/blood-pressure/how-to-measure-at-home) · [When to Worry](/blood-pressure/high-blood-pressure-when-to-worry)