ABSTRACT

Studies of associations between various cancers and the ABO blood groups have shown elevated relative risks for some categories of disease. To date, no report has evaluated the relationship between the ABO blood groups and the psoriasis.

We conducted a retrospective study of psoriasis diagnosed in Turkey. All cases were clinically and histopathologically confirmed. Blood information was obtained for 129 individuals with psoriasis, and the distribution of ABO and Rh blood type for cases was compared with that of 419 healthy blood donors from the same geographic area.

Patient group A and AB blood group was higher than the control group, O and B blood groups lower than the control group. There was no statistically significant differences between the two groups (p = 0.263). The patient group and control group statistically any significant differences were found between the distribution of Rh factor.

Our study shows some association of AB and O blood groups with psoriasis. Further studies in larger series on blood group antigens are needed to elucidate the relationship between these antigens and psoriasis.