Psoriasis may be present as dry, flaky pacthes within the ear canal. Ear psoriasis can cause scales to accumulate creating a blockage the ear canal. Ear Psoriasis is usually located on the outside ear canal or behind the ear itself. Dryness of the skin in the ear, with some scaling is characteristic of psoriasis. Psoriasis of the ears occurs in approximately 18 percent of all patients at some time.