Seborrheic eczema can cause flaking and itching all over the scalp. On the face, the rash appears next to the nose and in the furrow that goes down to the corners of the mouth, in the eyebrows, hairline and ear canals. On the body, it can appear over the breastbone, in armpits and other skin folds. Many get better in the summer. Seborrheic eczema is more common in men than in women. It may be itchy.
It is a hereditary component and people who have a slightly oily skin type with shiny skin find it easier. The skin's composition of protective fatty substances has changed. There is increased activity in the sebaceous glands, which leads to an overgrowth of fungus in the skin. A weakened immune system can predispose.
Seborrheic eczema on the scalp can be treated with over-the-counter antifungal shampoos from the pharmacy. If that doesn't help, a doctor can write a prescription for liquid cortisone that must be used over several days. On the face, the doctor will often prescribe a cream that suppresses the growth of fungi, and cortisone creams and other prescription creams for eczema. Moisturizers that remove dandruff and superficial dead skin can help.