What should you know about asymptomatic hypertension?

Feeling well does not show whether blood pressure is controlled. Repeated, properly taken readings help distinguish persistent hypertension from a temporary rise caused by stress, activity, pain or an unsuitable cuff.

Persistently raised pressure places extra strain on blood vessels, the heart, brain and kidneys even when there is no headache or dizziness. A clinician may review home readings, medicines, sleep, kidney health and cardiovascular risk before agreeing on a diagnosis and plan.

One unexpected reading is interpreted in context. Correct posture, a suitable cuff, a brief rest beforehand and repeat measurements can improve accuracy.

Arrange a routine clinical review and bring any home monitor, recorded readings and a complete medicine list. Do not stop prescribed blood-pressure medicine because you feel well. The plan may include checking measurement technique, blood or urine tests, lifestyle changes and medication adjustment.

Take medicines as directed, reduce excess salt, stay physically active in a way that suits your health, avoid smoking and attend follow-up checks. Ask whether snoring or disrupted sleep could justify assessment for sleep apnoea.

Seek emergency help for chest pain, severe breathlessness, fainting, new weakness or numbness on one side, facial droop, difficulty speaking, sudden confusion, loss of vision or a sudden severe headache. These symptoms need urgent assessment regardless of the blood-pressure reading.

If a home reading is unexpectedly very high but you feel well, sit quietly, repeat it using correct technique and contact a clinician promptly for instructions. Do not take an extra dose unless a clinician has given you a specific plan.

Ask how to measure at home, when to record readings, what your agreed target is, whether any medicines may raise blood pressure and which tests are appropriate for your kidneys and heart. Confirm when the next review should occur and what changes should prompt earlier contact.