Content of sialic acids was increased 2.9-3.4-fold in soluble fraction of pathologically altered skin (parakeratotoic scales in psoriasis and allergo dermatoses) as compared with a skin of healthy persons. In parakeratotic scales 7-11 zones of PAS (positive glycoproteins) were found by polyacrylamide gel disc electrophoresis; they occurred in skin of healthy persons only in several cases. Hemoglobin-binding activity (haptoglobin) was observed in pathologically altered skin of 64-93% patients with psoriasis; it was not found in healthy persons. The spectrum of haptoglobin fractions in skin correlated with its phenotype in blood.