Dandruff (also known as White Snow, Greasy Flakes, or Anthrax) is a very serious medical condition in which copious quantities of snow starts falling from one's head, followed by extreme itchiness. Dandruff is highly contagious, and can be spread through such ways as: * airborn dandruff spores * folliculitis Dandruff is a hazard to society, the health of your co-workers, and can cause one hell of a mess.