<unk>  occurred more frequently in the past when soluble<unk>  compounds were used in the treatment of allergic contact and other dermatitis, and in eroded areas<unk>  was sometimes deposited in the skin, like a tattoo.
Iron metallic discoloration
Hemosiderin hyperpigmentation
Titanium metallic discoloration
Hemosiderin
Hemosiderosis
Green nails
Blue nails
Xanthosis