Does sinusitis cause nosebleed?

Sinusitis can leave the lining of the nose swollen and delicate. Dry air, repeated blowing, rubbing, crusting or forceful nose picking may then break small blood vessels near the front of the nasal septum. Blood may appear after clearing congestion, and irritation from some nasal medicines can contribute. A nosebleed has many possible causes, including dryness, injury and medicines that affect clotting, so the symptom does not by itself establish sinusitis.

Sit upright, lean slightly forward and breathe through your mouth. Pinch the soft part of your nose continuously for ten to fifteen minutes, without checking repeatedly. Spit out blood rather than swallowing it. Once bleeding stops, avoid forceful blowing, heavy exertion and hot drinks for a while. Saline spray or a humidifier may reduce dryness. If you take a blood-thinning medicine, do not stop it without medical advice; ask a clinician how to manage recurrent bleeding.

Get urgent help if bleeding is heavy, follows a significant injury, causes faintness or breathing difficulty, or continues despite firm pressure. Arrange medical review for repeated episodes, bleeding from both nostrils, easy bruising, or symptoms such as persistent one-sided blockage, facial swelling or severe pain. A clinician can examine the nasal lining and check whether another problem is present.

Ask whether the bleeding pattern fits nasal irritation from sinusitis, whether any medicine is drying the lining, and how to prevent another episode. Ask whether you need examination of the nose or a review of medicines that affect clotting.