Prevalence Equal frequency in males and females May occur at any age from infancy to he 10th decade of life First signs of psoriasis Females mean age of 27 vears Males mean age of 29 yearsPrevalence Equal frequency in males and females May occur at any age from infancy to the 10th decade of life First signs of psoriasis – Females mean age of 27 years – Males mean age of 29 years