Perforated septum
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A perforated septum is a medical condition whereby the septum, the cartilaginous membrane dividing the nostrils, develops a hole or fissure.
This may be brought on directly, as in the case of nasal piercings, or indirectly, as by long-term cocaine use or chronic epistaxis. Rhinoplasty, if performed improperly, often results in a perforated or collapsed septum.