Psoriasis is no longer considerated a skin disease but a systemic one. It has been recognized the association of psoriasis, especially the most severe forms, with several diseases that share a common pathogenic inflammatory substrate (TNF-α ).In patients with severe psoriasis there is an increased prevalence of obesity, dyslipemia ( high Cholesterol and high trglycerides), adult diabetes mellitus, fatty liver. Also Psoriatic patients may have abdominal obesity, hypertension, insulin resistance with or without glucose intolerance. You must visit a Doctor.