It is estimated that 25 of the general population has seborrheic dermatitis, and between 2 to 3 of Americans have psoriasis. I switch the shampoos around; that way you get the benefit of having several different ways to treat the scalp. Is that itchiness you feel on your scalp psoriasis or dandruff? Here are the common signs and symptoms of seborrheic dermatitis of the scalp:. You may need to try different treatments to find what works best for you, and you also may need to change treatments after a while to get better results. Other skin disorders, such as seborrheic dermatitis, may look similar to psoriasis. If you have a more severe case of scalp psoriasis, you may need to try different treatment plans before you find the one that works for you.
Seborrhoeic dermatitis (SD) is a common, benign scaling rash. The sternum and upper back (between the scapulae) – may have fine scaling plaques. Psoriasis (of the scalp, face or chest): this may look similar to or may overlap with SD.