Hypertensive Urgency vs Emergency
| Type | BP | Organ Damage? | Treatment |
|---|---|---|---|
| Hypertensive urgency | ≥180/120 mmHg | NO | Oral medication — reduce over 24–48 hours; usually outpatient |
| Hypertensive emergency | ≥180/120 mmHg | YES | IV medication in ICU — controlled reduction over hours to days |
Call 999 / 911 If BP >180/120 PLUSSevere headache | Visual disturbance or loss | Chest pain | Shortness of breath | Confusion or altered consciousness | Signs of stroke. These indicate end-organ damage — a true hypertensive emergency.
Organ Damage in Hypertensive Emergency
| Organ | Manifestation | Test |
|---|---|---|
| Brain | Hypertensive encephalopathy, stroke, seizures | CT/MRI brain |
| Heart | Aortic dissection, STEMI, acute heart failure | ECG, troponin, CXR, echo |
| Kidney | Acute kidney injury, haematuria, proteinuria | Creatinine, urine dipstick |
| Eyes | Papilloedema, retinal haemorrhages | Fundoscopy |
| Blood vessels | Aortic dissection (severe tearing back pain) | CT aorta urgently |
Do Not Reduce Too FastSuddenly lowering very high blood pressure risks organ ischaemia — organs are autoregulated to a high BP and a rapid drop can cause stroke or kidney failure. The target is to reduce MAP by 20–25% over the first 1–2 hours, then further over 24–48 hours.
When BP Is High But Asymptomatic (Urgency)
If BP is 180–220/120 but you have NO symptoms, this is still serious but not an immediate emergency:
- Sit quietly for 15–30 minutes and recheck
- Do not take extra doses of your medication without advice
- Call your GP the same day for urgent review
- Go to A&E if you develop any of the symptoms above
Can anxiety cause a BP of 200?
Yes — severe anxiety or panic attacks can push BP temporarily to 180–200 systolic. However, always check for symptoms of end-organ damage. A single very high reading in an anxious patient requires repeat measurement after 15 minutes of rest.
Is headache always a sign of high BP?
Most headaches are not caused by high BP. However, a sudden, severe headache — especially at the back of the head or 'worst ever' — with very high BP requires emergency evaluation (possible subarachnoid haemorrhage or hypertensive encephalopathy).
Should I take extra BP medication if it's very high?
No — never self-medicate with extra doses unless your doctor has specifically given you instructions to do so in a crisis plan. Some medications taken at wrong doses can cause dangerous swings.
Medical Disclaimer: This page is for general education only and does not replace professional medical advice. Always consult a qualified healthcare provider.