Are medicated shampoos more effective than other shampoos?

Sometimes.: Medicated shampoos can be helpful for conditions such as psoriasis or seborrheic dermatitis. These are inflammatory diseases causing symptoms of irritation, scaling, and itching. Shampoos containing corticosteroids can be helpful at alleviating and controlling many of these symptoms. For mild conditions, however, the over the counter shampoos may be all that is necessary.