Seborrheic dermatitis is a skin disorder that mainly affects the scalp and causes flaking yellowish skin, oily skin, redness, swelling, itching and dandruff; it can affect the face, ears, chest and other body areas where the sebaceous glands abound.
Although not known with certainty the cause that causes seborrheic dermatitis, can be aggravated by a yeast infection, certain medical conditions affecting the nervous and immune, in periods with hormonal changes or may relate to the genetic system.
You can also suffer from seborrheic dermatitis, if you have stress, fatigue, obesity, or use topical products with alcohol.