CDC hypertension: what to know about high blood pressure

Blood pressure is the force of blood against artery walls. Persistent elevation can strain blood vessels and organs even when a person feels well. Over time, untreated hypertension can contribute to heart disease, stroke, chronic kidney disease, and heart failure. Weight, sleep apnoea, family history, medicines, alcohol, salt intake, and other health factors may influence readings. A single high reading can be affected by pain, stress, caffeine, or technique, so clinicians usually look for a pattern.

Arrange a blood-pressure review and bring home readings if you have them. Use a validated cuff, sit quietly with your arm supported, and record readings at the times your clinician recommends. Take prescribed medicine consistently and discuss side effects before stopping it. Regular movement, less salty food, avoiding tobacco, moderating alcohol, and improving sleep can support treatment. The goal and treatment plan should be personalised.

Seek emergency help for a very high reading accompanied by chest pain, severe breathlessness, weakness on one side, trouble speaking, confusion, or a sudden severe headache. These symptoms can signal angina, stroke, or another urgent problem. Without red-flag symptoms, contact your clinician soon about repeated high readings rather than changing medication yourself.

Ask how often to measure at home, what reading should trigger a call, whether another condition or medicine is contributing, and when treatment should be reviewed.