Psoriasis affects around 125 million people worldwide. Indeed, between 2% and 3% of the total population have psoriasis, according to the World Psoriasis Day consortium. Psoriasis is a chronic skin condition that significantly impacts patients' health and quality of life.
The PASI score helps clinicians determine the severity of their psoriasis and monitor treatment responses. It was created by Dr Torsten Fredriksson and Dr Ulf Pettersson in 1978 as an objective way to measure the effectiveness of psoriasis treatments.
This standardised scoring system allows for consistent assessment and comparison of disease severity, facilitating better patient management and enabling the evaluation of treatment efficacy in clinical trials.