What Causes Nosebleeds?
5. Sinusitis
The sinuses are chambers located in the skull. Their exact purpose is not clear, although it is known that they produce the mucus that lines the inside of our noses. They also help to make our skulls lighter, while it is also thought that the cavities help to enhance our voices. They will sometimes lead to problems, however.
The sinuses are themselves lined with a soft tissue, and this tissue is prone to infections. These infections can result in inflammation, which is known as sinusitis. This, in turn, will lead to a number of unwelcome symptoms, one of which is an increased chance of nosebleeds.
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