Three weeks afterward he carried in his nostril a tampon of lint, wet with an astringent solution, and, on the next day, on blowing his nose, there fell from the right nostril a body which he recognized as a leech.
Healey gives the history of four cases in which medicinal leeches were removed from the mouth and posterior nares of persons who had, for some days previously, been drinking turbid water.

Sinclair mentions the removal of a leech from the posterior nares.
In some regions, more particularly tropical ones, there are certain flies that crawl into the nostrils of the inhabitants and deposit eggs, in the cavities.

The larvae develop and multiply with great rapidity, and sometimes gain admission into the frontal sinus, causing intense cephalalgia, and even death.
Dempster reports an instance of the lodgment of numerous live maggots within the cavity of the nose, causing sloughing of the palate and other complications.

Nicholson mentions a case of ulceration and abscess of the nostrils and face from which maggots were discharged.
Jarvis gives the history of a strange and repeated hemorrhage from the nose and adjacent parts that was found to be due to maggots from the ova of a fly, which had been deposited in the nose while the patient was asleep.

Tomlinson gives a case in which maggots traversed the Eustachian tube, some being picked out of the nostrils, while others were coughed up.