Dandruff is the shedding of flaky, white-to-yellow pieces of skin from the scalp. You may notice white dandruff flakes on your shoulders or collar area. Dandruff is the result of a common skin condition called seborrheic dermatitis, which may be seen in people with eczema, psoriasis, fungus infections, or overactive oil glands, among other conditions. Dandruff is not contagious, but it can be hard to treat. It is more likely to affect men than women. Follow the links below to find WebMD's comprehensive coverage about how dandruff develops, what it looks like, how to treat it, and much more.
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Picture of Yellow Dandruff
If dandruff flakes are greasy and yellow, the probable cause is the skin condition known as seborrheic dermatitis; seborrhea is usually associated with redness as well.
Picture of Dandruff
Dandruff - those dry, white flakes of skin you constantly find yourself brushing off your collar or shoulders - typically poses no health risk whatsoever.