BSA is the acronym for "Body Surface Area". The BSA value is a parameter that is included in the PASI. The PASI is a measure of the severity of psoriasis. It records the percentage of the affected body surface area. The value ranges from 0 to 100 %
BSA is the acronym for "Body Surface Area". The BSA value is a parameter that is included in the PASI. The PASI is a measure of the severity of psoriasis. It records the percentage of the affected body surface area. The value ranges from 0 to 100 %