A new study published in the Clinical, Cosmetic and Investigational Dermatology attempted to survey the relationship between obesity and intensity of psoriasis. In this cross-sectional descriptive-analytical study, total of 42 patients with psoriasis, referred to Farshchian Hospital, Hamadan, participated. Patients were classified into mild, moderate and severe based on the intensity of the disease measured by Psoriasis Area and Severity Index (PASI). Overall, 35.07% patients had mild psoriasis, 21.4% patients had moderate psoriasis and 42.9% patients suffered from severe psoriasis. Mean BMI of mild psoriasis patients was 25.86±5.93 kg/m², while the values for moderate and severe psoriasis patients were 30.85±3.77 kg/m² and 26.96±5.68 kg/m², respectively. Mean waist size of the mild psoriasis patients was 91.54±11.49 cm, whereas those of moderate and severe patients were 99±8.39 cm and 92.17±10.73 cm, respectively. Therefore, the findings did not indicate any significant difference between mean value of body mass index, waist size, age and gender in mild, moderate and severe groups of the psoriasis patients.