Causes

The cause of seborrhoeic dermatitis remains unknown, although a yeast that is part of the normal skin flora, Malassezia furfur, likely plays a key role

Symptoms

The condition's symptoms appear gradually and usually the first signs of seborrheic dermatitis are the flakes of skin called dandruff. The symptoms may occur anywhere on the skin of the face, behind the ears and in areas where the skin folds. These are common sites that become red and flaky. The flakes can be yellow, white or grayish.

Side effects to inflammation may include temporary hair loss. If severe outbreaks are untreated for extended intervals, permanent hair loss may result because of damage to hair follicles

Treatmentsa

Dermatologists recommend topical treatments such as shampoos, cleansers or creams/lotions that contain antifungal, anti-inflammatory, sebo-suppressive or keratolytic ingredients:

Antifungal

Medications other than antifungals

Phototherapy which uses UV-A and UV-B laser or red and blue LED light

Natural treatments: Aloe Vera, Coconut oil, Tea tree oil, Viola tricolor or Heartsease,Honey, Avocado, Monarda fistulosa

Supplements: ProbioticsLactobacillus casei and Lactobacillus paracasei,Lactoferrin,Vitamin B Biotin,Vitamin B(Nicotinamide, also known as Niacinamide),Zinc

Prevention

A healthy scalp is the first step to preventing a flare-up. This can be accomplished with good hygiene and daily use of over-the-counter or prescription anti-fungal shampoo. Some effective over-the-counter shampoos include: Nizoral, Medicated Selsun Blue, and Head & Shoulders.

Seborrhoeic dermatitis: From Wikipedia,