Seborrhoeic dermatitis is caused by the same factors as dandruff.
As your scalp produces natural oils called sebum, the naturally-occurring microbe Malassezia globosa breaks it down into an irritant, oleic acid.
This irritant causes the rate of skin cell turnover to increase dramatically, leading to large clumps of cells building up on the surface of the scalp.
Treatment for seborrhoeic dermatitis
It’s easy to confuse seborrhoeic dermatitis with dandruff so the first step is to rule out dandruff.
Use an anti-dandruff shampoo regularly and monitor the affected area to see if the symptoms subside.
More articles about seborrhoeic dermatitis:
