Rhinolith

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A rhinolith is a "calculus present in the nasal cavity." It is an uncommon medical phenomenon, not to be confused with dried nasal mucus.

Rhinoliths are rare. They are formed by salts depositing over time on a foreign body in the nostril or paranasal sinus. The foreign body that forms the core for the rhinolith, can originate from within the body (such as a dried blood clot or an ectopic tooth) or outside of it (such as a fruit seed or a bead).

Rhinoliths can cause nasal obstruction, epistaxis, headache, sinusitis and epiphora.

References

1. American Heritage Dictionary. Houghton Mifflin Company (2004). Retrieved on December 10, 2006.
2. Ghorayeb, Bechara (October 21, 2006). Pictures of Rhinolith (Nasal Calculus). Retrieved on December 10, 2006.