It involves scraping build-up off the tongue ... or red patches on the tongue can be a sign of oral thrush, a type of fungal ...

Your mouth maintains a delicate balance of microorganisms. Poor tongue hygiene can tip the scales in favor of harmful fungi. Oral thrush is caused ... tool – A tongue scraper is ideal, but ...

"You should worry about the white tongue when you try to brush or scrape it off and it does not [scrape off]" says Messadi. "When there are sores and a mix of white and red areas on [the] tongue ...