Serum immunoglobulin and complement levels in patients with psoriasis vulgaris.

In 102 patients with psoriasis vulgaris, divided into group with slight psoriatic form and the group with severe psoriatic form, the serum immunoglobulin and complement levels were determined. The quantitation of immunglobulin and complement was carried out by single radial immundiffusion. It was found that the IgM levels were significantly decreased in both investigated groups. The IgA and IgG levels were significantly increased only in patients with severe psoriatic form. While the beta1A (C'3) levels were significantly increased in both investigated groups the beta1E (C') levels were not significantly changed compared to control group. It is concluded that the immunoglobulin imbalance in patients with psoriasis, opposite to complement, is depended on the severity of clinical form.