Our expert says:
One of the most common causes of nose-bleeds is environmental: dry air. But there are many other possible factors, including nose-picking, injury, allergy, colds and flu or other infections, snorting drugs, blood-clotting disorders, arteriosclerosis and high blood pressure. People who take blood-thinning drugs like aspirin may be prone to nose-bleeds. Sometimes the cause remains a mystery.
Most nosebleeds aren’t serious, but some are – so if you get one that doesn’t stop after about 15 minutes, or if you get them often, you should see a doctor. In your case, because the bleeding has persisted, you should definitely consult your doctor about it. The presence of pus also suggests that you may have an infection in the nasal cavities.
To help prevent nose-bleeds in future, consider installing an indoor air humidifier if your environment is very dry. Remember that indoor heating dries out the air too. You can also try applying a light layer of vaseline just inside your nostrils to help keep the nasal lining moist. And finally, don’t smoke and avoid smokey or dusty environments, which have a dehydrating and irritant effect.
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