Epidemiology of moderate-to-severe psoriasis: a comparison between psoriasis patients treated with biological agents, conventional systemic drugs and topical agents.

Psoriasis severity is directly related to an increased risk of cardiovascular disease, depression, hyperuricemia and nonspecific noninfectious liver disease. Male gender, increased height, early age of disease onset, viral upper respiratory infections and periods of hormonal changes seem to be prognostic of higher degrees of psoriasis severity. We are pioneering the use of increased height and puberty, menopause/andropause as independent prognostic factors of psoriasis severity.