Blue Hairy Tongue Hairy tongue syndrome is a relatively uncommon tongue condition causing a thickened and discolored tongue appearance. The most common discoloration is black (see below). However, other colors may be less commonly seen such as brown, white, and most rarely, even blue. Regardless of the color, the treatment is all the same. Normally the dorsal surface of the tongue mucosa is covered by filiform papillae protrusions that typically rise less than 1mm from the surface. However, in…
