Psoriasis Area Severity Index (PASI) Calculator (1.7.3)
 
The Psoriasis Area Severity Index (PASI) is an index used to express the severity of psoriasis.
It combines the severity (erythema, induration and desquamation) and percentage of affected area [4].
 
This free online application helps physicians and patients in the computation of the PASI.
If you find this application useful you can help with the costs of hosting with a small contribution.
 
  Head Arms
Area 0% <10% 10-29% 30-49% 50-69% 70-89% 90-100% 0% <10% 10-29% 30-49% 50-69% 70-89% 90-100%
Erythema (redness) 0 1 2 3 4 head 0 1 2 3 4 arms
Induration (thickness) 0 1 2 3 4 0 1 2 3 4
Desquamation (scaling) 0 1 2 3 4 0 1 2 3 4
  Trunk Legs
Area 0% <10% 10-29% 30-49% 50-69% 70-89% 90-100% 0% <10% 10-29% 30-49% 50-69% 70-89% 90-100%
Erythema (redness) 0 1 2 3 4 trunk 0 1 2 3 4 legs
Induration (thickness) 0 1 2 3 4 0 1 2 3 4
Desquamation (scaling) 0 1 2 3 4 0 1 2 3 4
 
Name: (optional)
Birth date: (optional)
PASI = 
 
 

Instructions

For each body section (head, arms, trunk and legs) specify:
  • the percent of area of skin involved
  • the severity of three clinical signs (erythema, induration and desquamation) on a scale from 0 to 4 (from none to maximum).
    See [2] for an example with pictures.

An optional name and birth date can be specified to be included in the printed report.

Until all the required parameters are chosen not complete will be shown in red near the result and printing will be disabled.

References

  1. Psoriasis Area Severity Index on Wikipedia (de, it)
  2. Dr A. Oakley, PASI score, DermNet NZ: clear description with photos of the different redness, thickness and scaling levels
  3. Changes
  4. Fredriksson, T., U. Pettersson. Severe psoriasis—oral therapy with a new retinoid. Dermatologica, 1978, 157(4):238-44. PMID 357213

Alternatives

See also

Authors

License

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>.

 
© Matteo & Michela Corti, 2009-2019
Comments and suggestions: Matteo Corti <matteo@corti.li>