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What to do if…
you get an unexpectedly high blood pressure reading and feel unwell

Produced and maintained by PanicStation.org Published: Last reviewed: Editorial policy USA guide

Short answer

If your blood pressure reading is around 180/120 mm Hg or higher and you feel unwell, take it seriously. Recheck once after at least 1 minute, and call 911 now if you have chest pain, shortness of breath, back pain, weakness, numbness, vision changes, trouble speaking, confusion, fainting, or any other new and concerning symptoms.

Do not do these things

  • Do not keep taking reading after reading every minute.
  • Do not take extra blood pressure medicine unless a clinician has specifically told you to do that.
  • Do not try to bring the number down quickly with intense exercise, cold showers, alcohol, or random supplements.
  • Do not drive yourself if you feel faint, have chest pain, have severe shortness of breath, or have stroke-like symptoms.
  • Do not ignore sudden weakness, numbness, trouble speaking, confusion, or vision changes because you think it might be stress.

What to do now

  1. Make the moment safer. Sit upright with your back supported, feet flat on the floor, and your arm supported. If someone is nearby, ask them to stay with you.
  2. Call 911 now if you have emergency symptoms. This includes chest pain, shortness of breath, back pain, weakness, numbness, trouble speaking, confusion, major vision changes, fainting, collapse, or feeling like you might pass out.
  3. Repeat the blood pressure reading once if you can do it safely. Put the cuff on bare skin, keep your arm supported at heart level, stay still, do not talk, wait at least 1 minute, and take one more reading.
  4. If the repeat reading is still around 180/120 mm Hg or higher, choose care based on symptoms.
    • If you have emergency symptoms, call 911 and do not drive yourself.
    • If you do not have emergency symptoms, contact your doctor, clinic, or on-call medical service right away for urgent guidance. If you cannot get prompt guidance, or you start feeling worse, seek urgent medical care today.
  5. Take medicines only as directed. If you are due for your usual blood pressure medicine, take it as prescribed unless a clinician has told you not to. Do not double up to chase the number down.
  6. Get a quick handoff ready. Write down or show:
    • the two readings and times
    • your symptoms and when they started
    • any missed blood pressure medicines
    • any new medicines, especially cold or decongestant medicines
    • recent stimulant use, severe pain, illness, pregnancy, or postpartum status
    • major health conditions such as kidney disease, heart disease, or a past stroke
    • your medication bottles or a photo of them

What can wait

  • You do not need to decide today whether you have long-term hypertension.
  • You do not need to change your diet, exercise plan, or regular medicines right now unless a clinician tells you to.
  • You do not need to keep checking all day after a correct repeat reading and arranging the right level of urgent care.
  • You do not need to solve why the reading happened before getting help for concerning symptoms.

Important reassurance

A very high reading can happen with pain, illness, stress, a cuff problem, or a measurement issue. The safest next step is not to panic-check repeatedly, but to notice symptoms, confirm the reading once if safe, and get urgent help when the number stays very high or you feel concerning symptoms.

Scope note

These are first steps only for a sudden high blood pressure reading with feeling unwell. Follow-up, diagnosis, and medication changes may need help from a healthcare professional.

Important note

This is general information, not medical advice, diagnosis, or professional care. If you feel seriously unwell, call 911 or seek emergency care even if you are unsure about the blood pressure number.

Additional Resources

Closely connected guides that may be useful during the same situation or its immediate aftermath.

About this guide

This guide was produced and is maintained by PanicStation.org using its published editorial process. Official and specialist sources are checked where relevant, and AI-assisted tools may be used for drafting, organisation, and consistency checks. The site operator remains responsible for publication, revision, and removal decisions.

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