Hypertension living in children

Overview

Hypertension, or high blood pressure, is when the force of blood pushing against the walls of your child’s blood vessels is too high over time. In children, it means their blood pressure readings are consistently higher than normal for their age, height, and sex.

High blood pressure is becoming more common in children, especially as rates of childhood obesity increase. However, it is still less common than in adults. It affects about 3-4% of children and teens.

It can affect children of any age, but it is more common in older children and teenagers. Children who are overweight, have a family history of high blood pressure, or have certain medical conditions (like kidney disease) are at higher risk.

Symptoms

Common symptoms

• Most children with high blood pressure have no symptoms at all.
• Some children may experience headaches, blurred vision, or nosebleeds.

Symptoms in children

• Tiredness or lack of energy
• Trouble sleeping
• Irritability or mood changes

Causes

Main causes

• Secondary hypertension: High blood pressure caused by another medical condition, such as kidney disease, hormonal disorders, heart problems, or certain medicines.
• Primary (essential) hypertension: High blood pressure that develops without a specific cause, often linked to being overweight, unhealthy diet (high in salt and low in fruits and vegetables), and lack of physical activity.

Risk factors

• Being overweight or obese
• Eating too much salt (sodium) from processed foods, fast food, and salty snacks
• Not getting enough physical activity
• Family history of high blood pressure
• Certain medical conditions, like kidney disease or diabetes
• Certain medicines (e.g., some steroids or decongestants)

When to see a doctor

See a doctor urgently if:

• If your child has any symptoms of hypertensive emergency (severe headache, chest pain, vision changes, seizures)
• If home blood pressure readings are very high (above 180/110 mmHg) – call your local emergency number immediately

Book a routine appointment if:

• If your child’s blood pressure is found to be high at a routine check-up, follow your doctor’s recommendations for further monitoring
• If your child has risk factors (overweight, family history), ask about checking blood pressure at every well-child visit
• If you have concerns about your child’s weight, diet, or physical activity levels

Diagnosis

High blood pressure in children is diagnosed by measuring blood pressure with a cuff that is the right size for the child. The readings are taken on several different visits to confirm it is consistently high. Your doctor will compare the numbers to charts based on your child’s age, height, and sex.

Tests that may be done

• Blood tests to check kidney function, blood sugar, and cholesterol
• Urine tests to look for signs of kidney disease or other problems
• Kidney ultrasound to examine the size and structure of the kidneys
• Echocardiogram (heart ultrasound) to see how the heart is working

What to expect at your appointment

Your doctor will likely ask for several blood pressure checks over a few weeks or months. They may also ask you to monitor blood pressure at home. If the readings are high, your child may be referred to a pediatric specialist (a doctor who cares for children with high blood pressure). You will work together to find the cause and start a treatment plan.

Treatment

Treatment for high blood pressure in children starts with healthy lifestyle changes. If those are not enough, or if the blood pressure is very high, medication may be prescribed.

Self-care at home

• Encourage a healthy diet rich in fruits, vegetables, whole grains, and low-fat dairy
• Limit foods high in salt (sodium), such as chips, fast food, processed meats, and canned soups
• Help your child stay active for at least 60 minutes every day (running, playing, sports)
• Reduce screen time (TV, computer, phone) and encourage outdoor play
• Help your child achieve or maintain a healthy weight

Medical treatments

If lifestyle changes alone are not enough, your child’s doctor may prescribe medicines to lower blood pressure. Commonly used types include ACE inhibitors, angiotensin receptor blockers (ARBs), calcium channel blockers, or diuretics. The choice depends on your child’s age, the cause of hypertension, and any other health conditions. It is important to take the medicine exactly as prescribed and talk to the doctor before stopping or changing it.

When is surgery considered?

Surgery is rarely needed. It may be considered if high blood pressure is caused by a problem like a narrowed kidney artery (renal artery stenosis) that can be corrected with a procedure.

Living with this condition

Managing high blood pressure in children is a family effort. Create a supportive home environment with healthy meals, active time together, and limited screen time. Your child may need to monitor their blood pressure at home, and you will need to keep up with regular doctor visits.

Lifestyle tips

• Make healthy eating a family habit – involve your child in grocery shopping and cooking
• Plan fun physical activities like bike rides, swimming, or family walks
• Set consistent bedtimes to ensure enough sleep
• Reduce stress with relaxation techniques, hobbies, or talking about feelings

Diet and exercise

A heart-healthy diet is important: choose foods low in salt, eat plenty of fruits and vegetables, whole grains, lean proteins (like fish, chicken, beans), and low-fat dairy. Avoid sugary drinks and fast food. For exercise, aim for at least 60 minutes of moderate to vigorous activity daily. This can be broken into shorter sessions (e.g., 20 minutes three times a day).

Mental health and emotional wellbeing

Children with a chronic condition like high blood pressure may feel worried, frustrated, or different from their peers. Encourage open conversations about how they feel. Remind them that this is manageable and that with healthy habits, they can do everything other kids do. If you notice signs of anxiety or depression, talk to your healthcare provider. For immediate mental health crisis support, contact a crisis helpline in your area.

Prevention

In many cases, high blood pressure in children can be prevented by encouraging healthy habits from an early age: a balanced diet low in salt, regular physical activity, maintaining a healthy weight, and limiting screen time. If your child has a medical condition that causes hypertension, treating that condition may help prevent it.

Screening programmes

Your child’s blood pressure should be checked at every well-child visit starting at age 3. If there are risk factors (overweight, family history, other health conditions), the doctor may check it more often.

Complications

If left untreated

• Damage to the heart (including thickening of the heart muscle)
• Damage to blood vessels, increasing risk of heart attack or stroke later in life
• Kidney damage or kidney failure
• Damage to the brain (cognitive problems, vision loss)

Long-term outlook

With early detection and proper management, most children with hypertension can avoid serious complications and live healthy, active lives. The key is working with your healthcare team, making sustainable lifestyle changes, and following the treatment plan. Many children see their blood pressure improve or return to normal with healthy habits alone.

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