No symptoms, checking risk.
Many pharmacies offer checks, and validated home monitors can provide a series of readings. Sit quietly and use the correct cuff size.
Read NHS test guidanceHigh blood pressure usually causes no symptoms, so reliable measurements matter. A GP can review home readings, cardiovascular risk, medicines and whether monitoring or treatment needs to change.
One high reading does not usually confirm hypertension. Diagnosis often uses repeat clinic readings, home measurements or a 24-hour monitor.

A reliable series of readings supports routine review; acute chest or neurological symptoms need emergency care regardless of the number.
Many pharmacies offer checks, and validated home monitors can provide a series of readings. Sit quietly and use the correct cuff size.
Read NHS test guidanceArrange a review for consistent high readings, medicine side effects, pregnancy planning or questions about your cardiovascular risk and targets.
Explore GP appointmentsCall 999 for persistent chest pain or stroke signs. Use NHS 111 for recurring headaches, blurred vision or intermittent chest pain.
Contact NHS 111NHS guidance usually considers clinic readings of 140/90 or higher, or home readings of 135/85 or higher, to be high—but diagnosis uses repeated measurements and clinical context.
Technique, timing and overall cardiovascular risk give a reading meaning.
Most people cannot feel high blood pressure. Measuring it is the only reliable way to know.
Home thresholds are slightly lower, and a series of readings can reduce the effect of stress in a clinic.
Age, family history, ethnicity, salt, weight, smoking, alcohol, inactivity and long-term stress can contribute.
Kidney disease, diabetes, sleep apnoea, pregnancy and some medicines can affect assessment and targets.
Do not repeatedly check every few minutes after one surprising result. Rest, repeat with good technique and seek advice based on the result and any symptoms.
A GP can validate the pattern and combine it with heart, kidney and stroke risk to guide treatment.
Explore in-person GP careReview monitor validation, cuff size, posture, rest time, timing and a structured morning-and-evening record.
Consider age, family history, smoking, weight, cholesterol, diabetes, kidney disease and previous heart or stroke problems.
Blood and urine tests, an ECG, lifestyle support or medicine may be recommended depending on confirmed readings and risk.
Small sustained reductions can protect the heart, brain, kidneys and eyes.
Reduce excess salt, exercise regularly, work toward a healthy weight, stop smoking and keep alcohol within recommended limits.
A clinician may recommend one or more medicines based on pressure, age, ethnicity, other conditions and potential side effects.
Regular readings and blood tests may be needed to assess response, kidney function and medicine safety.
Do not stop blood-pressure medicine because a home reading improves; the treatment may be why it is controlled. Discuss side effects or low readings with a clinician.
If advised, record two readings morning and evening over several days, one minute apart, after sitting quietly. Note the monitor model and cuff size.
Bring your medicines, side effects and recent cholesterol, kidney or diabetes results. Mention pregnancy, snoring, stimulant or decongestant use and family heart or stroke history.
Explore GP appointments ↗Practical answers to help you choose a sensible next step without trying to diagnose the concern yourself.
NHS guidance usually uses 140/90 or higher in a clinic and 135/85 or higher at home. Diagnosis normally requires repeat or ambulatory readings.
Usually not. High blood pressure often has no symptoms, which is why accurate measurement and follow-up matter.
Use a validated upper-arm monitor with the correct cuff, sit quietly with feet supported and arm at heart level, and follow the monitoring plan you were given.
No. Normal readings may show that treatment is working. Discuss changes or side effects with a clinician rather than stopping treatment yourself.