Argyria is a relatively rare skin disease caused
by deposition of silver grains in the skin from industrial exposure to
silver substrate, or as a result of medication with silver salt, characterized
by blue to bluish-gray coloration of the overlying skin. It is well-known
that there are two forms of argyria: localized and generalized forms.
Localized argyria has been reported to occur through embedded acupuncture
needles, topical application...