Most nosebleeds come from small vessels at the front of the nasal septum and stop with five minutes of firm pinch-pressure. A few — recurrent, heavy, or from further back — need an ENT to find the source and cauterise it. Knowing which is which is what protects you.
Anterior nosebleeds are the common kind: dry air, an irritated little patch on the septum, a sneeze, a pick. These you can almost always manage at home.
Posterior nosebleeds come from deeper vessels and can be heavier. They are more common in older adults, often with high blood pressure or anti-coagulant medication. These need a proper examination and sometimes packing or endoscopic cautery.
Any nosebleed lasting more than 20 minutes despite firm pinching, recurrent bleeds more than once a week, bleeding with dizziness, or bleeding while on blood thinners should be seen urgently. We have the equipment and experience to find and treat the source the same day.