What’s the Difference Between Seborrheic Dermatitis and Psoriasis?
Psoriasis and seborrheic dermatitis have several similarities. They are both patches of red skin with flakes. They can both be found on your scalp and back.
Psoriasis [4] is an inflammatory skin disease that is seen in 2% to 4% of the population. The scales of psoriasis are usually thicker than that of seborrheic dermatitis. The edges of those scales can be seen clearly. On the scalp, psoriasis scales have a silver color, not white or yellow.
A condition known as sebopsoriasis where seborrheic dermatitis and psoriasis overlap can be seen in some people. In this case symptoms of both are observed: both white flakes and silver flakes, both on the scalp or back, both itchy. You should talk to your doctor if you’re confused about whether you have psoriasis or seborrheic dermatitis.