The mucus from your stomach lining ... which can cause swelling in the blood vessels in the nose Higher levels of estrogen (the connection with rhinitis is currently still unclear) Placental creation ...

BBC Morning Live's regular, Doctor Xand Van Tulleken, has issued a warning against a "dangerous" hack that people frequently ...

You may also cough up mucus tinged with blood, which can be mostly clear ... Bleeding can occur when a tumor irritates or grows into blood vessels in the lungs or surrounding tissues or when a chronic ...

This pressure can cause mucus to shoot up into your sinuses ... The stuffy feeling is from inflamed blood vessels. Blowing will just irritate those vessels even more, which could increase the ...