A septal perforation is a hole perforation in the nasal septum —the tissue that separates the nostrils. It can occur as a result of previous nasal surgery, or as a result of a nasal fracture, and there are many more causes as well. A septal perforation is often thought of as resulting from cocaine use, but trauma or previous surgery are also common causes.

When a perforation is present, such symptoms may be noticed as:

• frequent crusting,
• bleeding,
• whistling while breathing,
• nasal obstruction,
• and rhinorrhea (runny nose)

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