To help identify the bleeding site (and possibly stop the bleeding), apply a vasoconstrictor / anesthetic mixture: Place about 3 mL of 4% cocaine solution or 4% lidocaine with oxymetazoline in a small medicine cup and soak 2 or 3 cotton pledgets with the solution and insert them into the nose, stacked vertically (or spray in a topical vasoconstrictor such as oxymetazoline and place pledgets containing only topical anesthetic).