How to Manage a Hypertensive Crisis at Home and When to Call 911

A hypertensive crisis is defined by the American Heart Association as a blood‑pressure reading of 180/120 mm Hg or higher. Depending on symptoms, it can be classified as either a hypertensive urgency or a hypertensive emergency.

What’s the difference?

1. Hypertensive urgency: Blood pressure ≥ 180/120 mm Hg **without** accompanying symptoms. Medical evaluation is needed, but immediate hospitalization is rarely required.
2. Hypertensive emergency: Blood pressure ≥ 180/120 mm Hg **with** symptoms such as chest pain, shortness of breath, visual changes, numbness, or difficulty speaking. This is a true medical emergency – call 911 or go to the nearest emergency department.

When you’re asymptomatic

If you obtain a reading of 180/120 mm Hg and feel fine, wait about five minutes, then re‑measure. If the second reading remains elevated but you still have no symptoms, you are dealing with a hypertensive urgency and should arrange prompt medical follow‑up.

Home techniques that may lower a sudden spike (temporary relief only)

• Controlled breathing: Inhale slowly for 4 seconds, hold for 2 seconds, then exhale gently for 6 seconds. Repeat for 3–5 minutes to promote relaxation.
• Lie down flat: Rest on your back for 10 minutes. This reduces the workload on your heart and can modestly lower pressure.
• Cool shower or bath: A brief cold‑water exposure causes brief vessel constriction followed by dilation, which may help lower pressure during the re‑warming phase.
• Hydration: Drink a glass of plain water. Dehydration can elevate blood pressure; adequate fluids support normal circulation.

Sports drinks are generally not recommended because added sodium can counteract the benefit of hydration.

When to seek immediate care

If you experience any of the following **and** your reading is 180/120 mm Hg or higher, call 911 or have someone drive you to the emergency department:

• Severe headache or vision changes
• Chest pain or pressure
• Shortness of breath
• Numbness, tingling, or weakness (especially on one side)
• Difficulty speaking or confusion

Medications and substances that can raise blood pressure

Several prescription and over‑the‑counter drugs—such as certain decongestants, non‑steroidal anti‑inflammatory drugs (NSAIDs), and some antidepressants—can increase blood pressure. Combining them with stimulants like caffeine, nicotine, or alcohol may amplify the effect. Always review your medication list with a healthcare professional.

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