From the mysterious white flecks that sometimes appear on nails to unusual ridging or changes in thickness, what do these ...

This condition—also called Raynaud's disease or Raynaud's phenomenon ... Can a vitamin deficiency cause blue nails? A vitamin ...

Argyria is caused by a buildup of silver in the body, which discolors the skin. Symptoms: The main symptoms of argyria are the skin developing a bluish-gray or gray tint, the fingernails growing ...