Demographic The highest percentage of psoriasis patients was observed in the 50 - 59 age group (19.66% of the psoriasis population), following by 40 - 49 age group (20.8%), 60 - 69 age group (17.7%), 30 - 39 age group (15%), age above 70 (9, 6%) and age 18 under 29 (8.8%).