A skin condition affecting many people in the United States is seborrheic dermatitis, or commonly referred to as dandruff. But dandruff can become extremely severe, with thick scales and redness due to varying degrees of oil buildup.
My article gives the type of seborrhea, symptoms, reasons for the condition, shampoo and other treatments, and referrals to alternate treatments.
So it is not just a matter of having a few flakes, though that is bothersome also, but it can be a very serious medical matter. I have written an article that will have plenty of information to contemplate, with possible answers to your questions. It is written for the lay person.
Click this link for the complete article http://hubpages.com/hub/Seborrheic-Dermatitis