For other uses, see Eidolon. In ancient Greek literature, an eidolon (plural: eidola or eidolons) (Greek Îµá¼´Î´ÏÎ»Î¿Î½: image, idol, double, apparition, phantom, ghost) is a spirit-image of a living or dead person; a shade or phantom look-alike of the human form. The concept of Helen of Troy's eidolon was explored both by Homer and Euripides.
Black hairy tongue is caused by bacteria or fungi in the mouth, which make the tongue appear black and hairy. It's easily remedied by good old-fashioned oral hygiene. A black hairy tongue is caused by too much bacteria or yeast growth in the mouth. The bacteria build up on tiny rounded projections called papillae. These lie along the surface of the tongue. Instead of shedding as they normally do, the papillae start to grow and lengthen, creating hair-like projections.
In some cases, the cause of black, coated tongue can't be determined. -->Gently brush your tongue with a toothbrush twice a day. -->Rinse your mouth with diluted hydrogen peroxide (one part peroxide to five parts water) or apply it with a toothbrush. Rinse your mouth with water afterward.