What Is Scalp Psoriasis and Dandruff?
Psoriasis is a chronic autoimmune condition that causes the immune system to mistakenly attack healthy cells in the body. This leads to a quicker life cycle of skin cells than usual, which results in gray, silver hardened areas called plaques. Psoriasis may affect different part of the body. Among these, around 50 percent of reported cases involve the scalp. Currently, there is no cure for scalp psoriasis. It is characterized by periods of remissions when no symptoms occur and periods of outbreaks when symptoms become worse. 
Dandruff is a common skin issue characterized by mild redness, itching, and skin flakes on the scalp. It tends to be harmless, and not serious or contagious. In fact, it is a milder type of seborrheic dermatitis, a more severe skin disorder. However, the appearance would make many people feel embarrassed in social situations. It is estimated that up to 50 percent of the adult population is affected with dandruff. In mild cases, daily shampooing may help treat this skin issue easily.