Articles

White coat syndrome, otherwise called white coat hypertension, refers to the increased blood pressure readings recorded by some patients when they are in a hospital setting; the readings are normal in other settings. The anxiety of being around doctors (who typically wear white coats) seems to trigger a rise in the readings, thus leading to the name.

A blood pressure reading of 120/80 mm of Hg or lower is considered normal for adults. Blood pressure readings are significant because they indicate the risk of a person developing heart diseases.

Interestingly, there is also a condition called masked hypertension which is the opposite of white coat hypertension. In people with masked hypertension, the blood pressure readings in a hospital setting are lower than what is observed in other settings. This condition often misleads people into thinking that they do not suffer from hypertension.

Is White Coat Syndrome a Cause for Concern?

Recent studies have arrived at the conclusion that white coat hypertension is related to a small but definite risk of developing a heart condition. Furthermore, people with white coat syndrome also have an increased risk of developing chronic hypertension in the future (a BP reading equal to or more than 130/80 mm of Hg). Thus, it is essential that people who exhibit this syndrome be monitored so that any incipient changes may be detected. A study revealed that 15-30% of people who were diagnosed with hypertension had white coat syndrome.

The groups at risk of developing white coat syndrome include:

• Older adults
• Women, including pregnant women
• People who were recently diagnosed with mild hypertension
• Nonsmokers (Smokers are more prone to masked hypertension.)

Symptoms of White Coat Syndrome

• People with white coat syndrome get anxious at the thought of going to hospitals to get their blood pressure readings taken. The anxiousness peaks when they enter the examination room to get checked.
• Thus, feelings of anxiety, or increased heart rate, are indicators of white coat syndrome.

Causes of White Coat Syndrome

• The stress of getting checked for hypertension activates the sympathetic nervous system. This negatively impacts the cardiovascular system which results in raised BP readings.
• However, research has also linked white coat syndrome to underlying conditions like stiffness in the arteries, kidney problems and heart disease.
• It is necessary to note that blood pressure readings are affected by factors like the time of day, the type of environment, emotional state and the amount of activity before the reading.

Diagnosis

Diagnosing white coat syndrome can be tricky as it is not easy to decipher if a person’s high BP readings are due to being at the hospital or because of chronic hypertension.

When BP readings are high twice in a row, the doctor will typically advice the person to monitor blood pressure in home settings. He might also suggest using an ambulatory blood pressure monitor which will record the person’s blood pressure continuously as he goes about his day.

A person whose hospital blood pressure readings are around 140/90 mm of Hg (or more) and at-home readings are lesser than 135/80 mm of Hg is said to have white coat syndrome.

Management of White Coat Syndrome

A patient with white coat syndrome will be advised by his doctor to monitor his blood pressure readings regularly at home to check if he is turning into a chronic hypertensive.

Lifestyle modifications, if applicable, will also be suggested. These include:

• Maintaining ideal weight
• Exercising regularly
• Reducing salt consumption
• Controlling alcohol intake
• Quitting smoking

Treating White Coat Syndrome

Doctors usually do not prescribe antihypertensive medicines for those who exhibit white coat syndrome as this could lead to hypotension – a condition in which the blood pressure drops very low resulting in weakness and dizziness. However, if the person has an increased risk for heart conditions, medications may be started.

The lifestyle modifications given above will usually suffice if the doctor does not perceive any risk.

Tips to Handle White Coat Syndrome

• Relaxation techniques like meditation and breathing techniques can help control the stress a person feels before a doctor consult. Arriving early at the hospital and practicing the relaxation techniques may help.
• It is essential to feel comfortable with the doctor to control white coat syndrome. Talking about it with the doctor may help, and as patients are usually more comfortable at the end of the visit, a rereading at that time may be useful.
• People who suspect that they have the syndrome should avoid coffee, cigarettes and any form of exercise for around half an hour ahead of their appointment. 

Takeaway

A hospital visit can increase blood pressure temporarily – this does not mean it is a sure shot sign of a serious health issue but it is something that requires monitoring. Periodic checks will help detect any changes in blood pressure readings – high readings at home should be communicated to the doctor so that appropriate treatment can begin. For people exhibiting white coat syndrome, the key is to keep monitoring blood pressure.

Frequently Asked Questions About White Coat Syndrome

What is white coat syndrome?
White coat syndrome is a condition where blood pressure readings rise in a hospital or clinic setting but remain normal at home or in daily life.

Why does blood pressure increase at the doctor’s office?
Anxiety, stress, or fear during medical visits activates the body’s stress response, temporarily increasing heart rate and blood pressure.

Is white coat syndrome the same as hypertension?
No. White coat syndrome causes temporary high readings only in clinical settings, while hypertension shows consistently high blood pressure across all settings.

Can white coat syndrome turn into chronic hypertension?
Yes. Studies show that people with white coat syndrome have a higher risk of developing long-term hypertension, which is why regular monitoring is important.

How is white coat syndrome diagnosed?
Doctors compare clinic readings with home blood pressure monitoring or ambulatory blood pressure monitoring done over 24 hours.

Does white coat syndrome require medication?
In most cases, medication is not needed. Lifestyle changes and regular monitoring are usually sufficient unless there is a high cardiovascular risk.

How can I reduce white coat blood pressure readings?
Relaxation techniques, deep breathing, arriving early for appointments, avoiding caffeine before visits, and discussing anxiety openly with your doctor can help.