donation. 1  an act or instance of presenting something as a gift, grant, or contribution. 2  a gift, as to a fund; contribution.
A black or brown tongue typically is due to the overgrowth of bacteria that normally are present on the tongue. This, too, can be caused by the killing of some bacteria with antibiotics so other bacteria overgrow. But the most common cause of discoloration of the tongue is the overgrowth of a fungus. The most common fungus is called candida. But overgrowth of the candida fungus turns the tongue white. Infection with candida is called candidiasis, and when it happens on the tongue the condition is called thrush.
A tongue that looks white in patches may indicate another condition, thrush, a type of oral yeast infection. This may be caused if you have recently taken antibiotics, and itâs not uncommon in infants and the elderly.enerally, the occasional white tongue, especially when the whole tongue is white (not white in spots or patches), is due to minor inflammation of papillae, the tiny bumps that coat your tongue.