High blood pressure and nose bleeds: what to know

Nose bleeds commonly start when delicate blood vessels inside the nose become dry, irritated, or injured. Nose picking, forceful blowing, allergies, a cold, and some medicines can contribute. High blood pressure may make bleeding harder to settle, and a nose bleed can also make a reading temporarily higher because of stress. A nose bleed is not proof that your blood pressure is high, and high blood pressure is not diagnosed from this symptom alone.

A blood pressure reading is more useful when taken after you have rested quietly, with the cuff fitted correctly. Repeated high readings need a clinician's review, even if you feel well.

Sit upright, lean slightly forward, and breathe through your mouth. Pinch the soft part of your nose continuously for several minutes without checking too early. Spitting out blood is safer than swallowing it. Do not tilt your head back, pack the nose with tissue, or blow your nose immediately after the bleeding stops. Record a blood pressure reading only once you are calm, and take prescribed blood pressure medicine as directed rather than adding an extra dose.

Seek urgent help if bleeding is heavy, follows a significant injury, causes weakness or breathing difficulty, or does not settle with firm pressure. Get emergency help for a very high reading together with chest pain, severe headache, confusion, new weakness, trouble speaking, or vision change. These symptoms can signal a serious problem such as Stroke, so do not wait for the nose bleed to resolve.

Ask whether your home readings need a different monitoring routine, whether any nasal spray or blood-thinning medicine could be contributing, and what reading or symptom should trigger urgent help. Bring your medicine list and a record of readings taken when rested.