Scalp eczema can cause problems for your scalp or any affected areas of your skin. Common symptoms include flaky skin (dandruff), itching, red skin, scaliness or crusting of the skin, greasy patches, and hair loss.  Inflammation leads to red patches and high fatty acid content, which can make the skin greasy and yellow in some people.  In infants, it is common in the scalp and can present as red, dry scaly plaques, or in more severe cases as thick white or greasy yellow scales. Other skin diseases such as fungal infection, psoriasis, dermatitis, and lupus may resemble scalp eczema. However, these differ based on the location and layers of the skin involved.  If you aren’t sure whether your symptoms match those of scalp eczema, see your doctor. S/he can help you determine the cause of your symptoms and whether they are severe enough to require treatment. In addition to decreased oils and moisture present, doctors believe that a certain kind of yeast, Malassezia furfur, has a role in causing seborrheic eczema. Malassezia yeast is usually present on the outer surface of the skin. In those with scalp eczema, this yeast invades the superficial layers of skin and secretes substances that increase fatty acid production. This leads to inflammation and enhances production and dryness of skin, which causes the skin to flake. If your eczema is atopic, meaning that your family has a tendency to develop eczema, yeast may not be the culprit. Doctors believe that many people with atopic eczema have a faulty skin barrier due to a changed gene within the skin’s structural proteins. While doctors are not certain why some people develop seborrheic eczema, and others don’t, there do appear to be some factors that increase your risk, including:  Being overweight or obese Fatigue Environmental factors (such as dry weather) Stress Other skin issues (such as acne) Certain medical conditions, including stroke, HIV, Parkinson’s disease, or head injury Alcohol removes protective oils from the skin surface, causing the scalp to dry out....

TL;DR in Vietnamese:
Tìm các triệu chứng phổ biến. Biết về nguyên nhân của chàm. Xác định yếu tố rủi ro. Tránh dùng sản phẩm chăm sóc da và tóc chứa cồn. Không gãi chỗ da ngứa. Bệnh có khả năng tái phát.