Psoriasis Area and Severity Index (PASI)

Fredriksson T; Pettersson U


Basic description

  • Developed in 1978
  • The SAPASI (self-administred PASI) was developed in 1994
  • The SPASI (simplified PASI) was developed in 2004
  • PASI 50 and PASI 75 (50% and 75% improvement in PASI) are clinically meaningful endpoints

Fredriksson T; Pettersson U

No information
To assess psoriasis disease severity in clinical trials
Therapeutic area
  • Skin and Connective Tissue Diseases
Therapeutic indication


Type of Clinical Outcome Assessment (COA)
  • clinro ClinRO
Original language(s)
  • Swedish for Sweden
Bibliographic reference(s) of the original questionnaire

Fredriksson T, Pettersson U. Severe psoriasis--oral therapy with a new retinoid. Dermatologica. 1978;157(4):238-44 (PubMed Abstract)

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