About this condition
Persistent high blood pressure in children requires clinical assessment, but a single elevated reading during anxiety is not enough to establish hypertension. Paediatric reference values differ from those used for adults.
What matters most
Age, sex, height and a correctly sized cuff all matter when interpreting a child’s blood pressure. Recording repeated measurements and accompanying symptoms is more useful than comparing every child with the adult benchmark of 120/80.
Symptoms and reasons to seek help
High blood pressure can cause no symptoms. Some children report headaches or nonspecific discomfort. A pattern of elevated readings, especially alongside swelling, blood or protein in urine, or known kidney abnormalities, deserves medical attention.
Distinguishing similar conditions
Temporary elevation from pain, stress or inaccurate cuff size must be distinguished from sustained hypertension. Kidney disorders are one possible cause, not the only cause. Very high pressure accompanied by neurological symptoms is different from an isolated elevated reading.
How clinicians investigate
A clinician checks measurement technique and repeats readings against paediatric thresholds. Depending on findings, urine testing, kidney-function tests, ambulatory blood pressure monitoring or assessment by a paediatric nephrologist may be appropriate.
Care and important limitations
Management depends on confirmed blood pressure level, age, underlying conditions and risk. Lifestyle measures or prescribed medication may be considered individually. Never give a child an adult antihypertensive medicine or adjust a dose without medical advice.
When emergency help is needed
Very high blood pressure with severe headache, vomiting, visual disturbance, seizures or altered consciousness requires emergency assessment. Call 103 or 112 immediately for seizures, impaired consciousness or a rapidly deteriorating child.
Related information
Polycystic kidney disease in children; Glomerulonephritis in children; Kidney cysts in children; Protein in a child’s urine.
Signs and symptoms
High blood pressure can cause no symptoms. Some children report headaches or nonspecific discomfort. A pattern of elevated readings, especially alongside swelling, blood or protein in urine, or known kidney abnormalities, deserves medical attention.
Diagnosis and tests
A clinician checks measurement technique and repeats readings against paediatric thresholds. Depending on findings, urine testing, kidney-function tests, ambulatory blood pressure monitoring or assessment by a paediatric nephrologist may be appropriate.
Care and treatment approaches
Management depends on confirmed blood pressure level, age, underlying conditions and risk. Lifestyle measures or prescribed medication may be considered individually. Never give a child an adult antihypertensive medicine or adjust a dose without medical advice.
When to seek urgent care
Very high blood pressure with severe headache, vomiting, visual disturbance, seizures or altered consciousness requires emergency assessment. Call 103 or 112 immediately for seizures, impaired consciousness or a rapidly deteriorating child.
Frequently asked questions
Can adult blood pressure thresholds be used for every child?
No. Interpretation usually requires paediatric references that reflect the child’s age, sex and height.
Does one high reading establish hypertension?
Usually not when there are no emergency features. Proper repeated measurements are important.
Why might doctors check kidney function?
Kidney conditions can contribute to persistent hypertension. Tests are selected according to the clinical situation.
Important information
A medical consultation is needed for diagnosis and treatment recommendations.
Self-treatment can be harmful to your health.
