Methods: This research was carried out by retrospective screening of viral hepatitis markers from the files of psoriatic patients in the dermatology

department. Data of 1017 psoriasis patients who applied between January 2010 and January 2018 could be reviewed. Hepatitis markers of 243

patients were used as controls.

Results: HBsAg was positive in 2.6% of the patients (n=26). This rate was 2.6% (n=15) in males and 2.5% (n=11) was in females (p=0.937). In the

control group, HBsAg was positive in 3.7% (n=9) (p=0.328). 30.3% (n=308) of the patients had anti–HBs antibody positivity. Anti–HBs positivity

in controls was 44.9% (n=109) (p<0.001). The mean age of patients with anti–HBs antibody positivity was 45.5±16.5 years, while the mean age of

patients with anti–HBs antibodies was 47.5±13.9 years (p<0.048). Anti–HCV positivity was found in 1.0% of the patients and was 2.1% (n=5) in

controls (p=0.165). The mean age of patients with anti–HCV antibody positivity was 70±13.8 years, while it was 46.7±14.6 years in patients with

negative anti–HCV antibodies (p<0.001).

Conclusion: The incidence of HBV and HCV in psoriatic patients was not different from the normal population. AntiHBs antibody positivity and

antiHCV positivity are not different according to sex, but may show a significant difference in age distribution.