ePASI assesses four body regions: i) the head and neck, ii) the hands and arms, iii) the chest, abdomen and back (trunk) and iv) the buttocks, thighs and legs. Each region is given a score based on the extent and severity of the psoriasis. The area extensity score can range from 0 (no psoriasis) to 6 (all of the skin affected). The severity score, based on redness, thickness and scaling, is rated from zero (none) to 4 (very severe). The final score falls between the range of 0 (no psoriasis) to 72 (maximum psoriasis).
Treatment should not only take itch into consideration but also scratching-induced skin lesions and accompanying disorders such as anxiety, depression and insomnia.
