By Gary M. White, MD
This woman's fingernails turned a yellow orange from an unknown contactant.
Many contactants may turn nails a variety of colors.
|Orange-Brown||Anthralin, Arning's tincture, burnt sugar, chromium salts, chrysarobin, dinitrotoluene, dithranol, formalehyde, glutaraldehyde, Henna, hydroquinone, iodohydroxyquinolene, iron, mepacrine, nicotine, paraquats, pecans, picric acid, potassium permanganate, pyrogallol, resorcin combined with nail lacquer, rivalol, roasted coffee, thermal injury, vioform, and walnuts.|
|Yellow||Amphotericin, dinitro-orthocresol, dinubuton, fluorescein, Hatter's chemicals, gold therapy and hydrofluoric acid|
|Dark Blue||Oxalic acid or silver and cyanide|
|Gray Blue||Ammoniated mercury or mercuric chloride plus sunshine|
|Black||Photographic developers, red wine and silver nitrite|
|Green||Chlorophyll and copper salts|
Avoiding the contactant will allow the nails to grown out normally over 6 (fingernails) to 12 (toenails) months.