How Severe Is My Psoriasis?
Take the Self-Administered PASI (SAPASI), the patient-friendly version of the gold-standard PASI score used by dermatologists. Assess psoriasis severity across body regions using simple visual scales. Track changes over time to monitor treatment response. Instant results.
Before You Start
- This is a screening tool, not a diagnostic test
- All answers are processed in your browser only
- No data is stored or sent to any server
- Results can be copied to share with your clinician
What Is SAPASI?
The Self-Administered Psoriasis Area and Severity Index (SAPASI) is a patient-friendly version of the PASI, the gold standard clinical measure for psoriasis severity. SAPASI allows you to assess your psoriasis at home using simplified body diagrams and visual analogue scales for redness, thickness, and scaliness. Research shows SAPASI correlates well with clinician-administered PASI, making it a practical tool for self-monitoring.
Monitoring Psoriasis at Home
Psoriasis severity can change over weeks and months, particularly in response to treatment, stress, or seasonal factors. Regular SAPASI assessments help you track your progress objectively rather than relying on memory. This is especially useful for monitoring treatment effectiveness between dermatology appointments, and many clinicians now incorporate patient-reported SAPASI into their remote monitoring programmes.
How SAPASI Works
SAPASI asks you to shade affected areas on a simple body diagram and rate the redness, thickness, and scaliness of a typical patch using visual scales. The resulting score reflects both how much of your body is affected and how severe the patches are. Lower scores indicate milder psoriasis, while higher scores indicate more severe disease requiring active treatment.
What Your Score Means
Your SAPASI score provides an objective measure you can share with your dermatologist. Treatment goals in psoriasis often aim for 75% or 90% improvement from baseline (PASI 75/90), and tracking SAPASI over time helps both you and your clinician assess whether you are reaching these targets. Bringing your score history to appointments gives your dermatologist better data for treatment decisions.