This Psoriasis Area Severity Index (PASI) calculator lets you calculate the disease activity of your psoriasis patients.

1. Choose the area involved in each area of the body. You may use the body surface area calculator to determine the extend using the palm method.

2. Choose the intensity (scale 0-4) of the disease for erythema, induration and desquamation for each part of the body.
  

--> you will be provided with the total PASI score below.

Use the calculator below to get started.