Seborrhoea Dermatitis is a red, itchy rash on your scalp that has flaky scales. It's a common skin disease that looks similar to, eczema, or an allergic reaction. It can appear on your body as well as your scalp.
The exact causes of seborrheic dermatitis is unknown. It seems to be a combination of things, including:
Stress
Your genes *The main factor*
A yeast that normally lives on skin
Cold, dry weather
The best treatment method is to use an over-the-counter dandruff shampoo that contains:
Coal tar
Ketoconazole
Salicylic acid
Selenium sulfide
Zinc pyrithione
If your Seborrhoic Dermatitis is really bad, go to your doctor. He can prescribe a shampoo that will be much stronger then anything available over the counter.