They’re purple or blue and can be seen running along the underside and sides of your tongue ... slowly and may include a purple tongue. Though brown or tan spots are more common, a 2014 case ...

“The tongue tip has a purple bluish colour or these may be blood stasis spots on the tip. The sublingual veins are dark or crooked and thick.” Li Guang Jun, a registered TMC physician with the ...

Those blue-purple spots on the tongue's serrated edge represent polarized light interacting with keratin. Image by David Linstead You’re looking at a 3 mm-wide section of a cat tongue more than a ...