What should you know about left nose bleed?

Small blood vessels near the front of the nose can bleed after dry air, rubbing, nose picking, forceful blowing or an impact. Allergic Rhinitis and a blocked nose can lead to repeated rubbing and irritation. Some medicines and health conditions can make bleeding easier or harder to control. Blood may run forward from the left nostril or backward into the throat, so sit upright and spit out blood rather than swallowing it.

A single brief episode is often manageable at home, but repeated bleeding from one side, crusting, pain or a persistent blocked feeling should be examined. The side alone does not reveal the cause.

Sit upright, lean slightly forward and pinch the soft part of the nose continuously with your fingers. Breathe through your mouth and avoid checking too soon, because releasing pressure can restart bleeding. Once it has stopped, avoid nose blowing, heavy exertion, hot drinks and picking for a while. Saline spray or a suitable moisturising product may reduce dryness; ask a pharmacist what is appropriate for you. Do not stop prescribed blood-thinning medicine without medical advice.

Seek urgent care if bleeding is heavy, follows a significant injury, causes weakness or dizziness, continues despite sustained pressure, or fills the throat. Get prompt medical advice for frequent episodes, easy bruising, bleeding while taking anticoagulants, or a nosebleed with severe headache or very high blood pressure symptoms. Emergency assessment is appropriate if you have trouble breathing or feel faint.

What may be irritating the left side? Could allergy or a blocked nose be contributing? Should my medicines be reviewed? How can I protect the nasal lining and what threshold should prompt urgent care?