This demo shows how to create interactive medical calculators with real-time BSA calculation based on clinical scoring systems. As users input data for different body areas, both PASI score and Body Surface Area (BSA) percentage update instantly with visual feedback.
How It Works:
- Users select severity levels for 4 body areas (Head, Arms, Trunk, Legs)
- Each area evaluates: extent, erythema, infiltration, and desquamation
- PASI score calculates automatically using the official formula
- BSA percentage shows simultaneously with ranges (e.g., “7-17%”)
- Results appear instantly with color-coded severity levels
- No page refresh needed – everything happens live
Current Example: PASI Calculator
- 4 body areas with 4 parameters each (16 total inputs)
- PASI scores from 0-72 with clinical interpretation levels
- BSA calculation shows affected body surface percentage
- Colors change from green (no psoriasis) to red (severe psoriasis)
- Compact 2×2 grid layout for efficient data entry
This Method Works For Any Medical Scoring System:
Dermatology:
- DLQI (Quality of life impact)
- SCORAD (Atopic dermatitis severity)
- IGA (Investigator Global Assessment)
- Skin cancer risk calculators
Clinical Assessment:
- Pain scales (VAS, McGill)
- Depression/Anxiety screening tools
- Cardiovascular risk calculators
- BMI and metabolic assessments
Specialty Medicine:
- Rheumatology activity scores (DAS28, BASDAI)
- Neurological scales (EDSS, NIHSS)
- Pediatric development assessments
- Geriatric functional evaluations
Research & Trials:
- Clinical endpoint measurements
- Patient-reported outcomes
- Biomarker calculators
- Treatment response indices
Benefits:
- Instant results – no waiting for calculations
- Dual scoring – PASI + BSA in one tool
- Visual feedback keeps users engaged
- Professional medical appearance
- Mobile-optimized for clinical use
- Printable results for patient records
- Easy to customize for any scoring system
Perfect for any clinical situation where you need to turn a complex medical assessment into an interactive tool with immediate, accurate results and comprehensive reporting.
PASI Calculator
Psoriasis Area Severity Index
About PASI
The PASI (Psoriasis Area Severity Index) is the most widely used index for evaluating the severity and extent of psoriasis. It also calculates the BSA (Body Surface Area) affected.
Score Interpretation
Disclaimer: This tool is for educational and self-assessment purposes only. It does not replace professional medical consultation. For accurate clinical evaluation, always consult your dermatologist.





