Introduction
Psoriasis is a chronic inflammatory disease caused by hyperproliferation of the keratinocytes in the epidermis [1]. The pathophysiology of psoriasis still remains uncertain; however, it appears to be influenced by genetic and immune-mediated components [2]. This is supported by the successful treatment of psoriasis by immune mediating medications and the increase in the number of activated T-cells in the dermis that are capable of inducing proliferation of the keratinocytes [3-5]. Previous studies have discovered an association between specific HLA antigens and gene deletions with the susceptibility to psoriasis in different populations [6]. There are various types of psoriasis including plaque-type psoriasis, guttate psoriasis, pustular psoriasis, linear psoriasis and more [7]. Here, we report the first case of dermatomal psoriasis and a case of unusual plaque psoriasis in two different patients.