A<unk>  is a medical condition in which the nasal<unk> , 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 topical drug application, including intranasal ethylphenidate, methamphetamine, cocaine, crushed prescription pills,  or decongestant nasal sprays, chronic epistaxis, aggressive digital nasal cleaning (nose picking) and as a complication of nasal surgery like septoplasty or rhinoplasty. Much less common causes for perforated nasal<unk> s include rare granulomatous inflammatory conditions like granulomatosis with polyangiitis. It has been reported as a side effect of anti-angiogenesis drugs like bevacizumab.
Nasal septum perforation
Nasal fracture
Nasal polyp
Nasal bone fracture
Epiglottitis
Adenoiditis
Laryngocele
Nasopalatine cyst