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PASI Score 2003

The PASI score is used to measure the severity and extent of psoriasis. It evaluates four body regions for the intensity of redness, thickness and scaling on a scale of 0 to 4, and the percentage of body surface area affected on a scale of 0 to 6. The intensity scores are multiplied by representative weightings for each body region and added to the area scores multiplied by the percentage affected to calculate a total PASI score.

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Riantiara Putriza
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6K views2 pages

PASI Score 2003

The PASI score is used to measure the severity and extent of psoriasis. It evaluates four body regions for the intensity of redness, thickness and scaling on a scale of 0 to 4, and the percentage of body surface area affected on a scale of 0 to 6. The intensity scores are multiplied by representative weightings for each body region and added to the area scores multiplied by the percentage affected to calculate a total PASI score.

Uploaded by

Riantiara Putriza
Copyright
© Attribution Non-Commercial (BY-NC)
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as DOC, PDF, TXT or read online on Scribd
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PASI score

A PASI score is a tool used to measure the severity and extent of psoriasis (Psoriasis Area and Severity Index). It takes a few minutes and experience to calculate it accurately.

Intensity
A representative area of psoriasis is selected for each body region. The intensity of redness, thickness and scaling of the psoriasis is assessed as none (0), mild (1), moderate (2), severe (3) or very severe (4). Psoriasis: severity scoring Intensit y Absent Mild Moderate Severe Very severe

Redness Score 0 Score 1 Score 2 Score 3 Score 4

Thickne ss Score 0 Score 1 Score 2 Score 3 Score 4

Scaling Score 0 Score 1 Score 2 Score 3 Score 4

ICalculation for intensity


The three intensity scores are added up for each of the four body regions to give subtotals A1, A2, A3, A4. Each subtotal is multiplied by the body surface area represented by that region.

A1 x 0.1 gives B1 A2 x 0.2 gives B2 A3 x 0.3 gives B3 A4 x 0.4 gives B4

Area

The percentage area affected by psoriasis is evaluated in the four regions of the body. In each region, the area is expressed as nil (0), 1-9% (1), 13-29% (2), 30-49% (3), 50-69% (4), 7089% (5) or 90-100% (6).

Head and neck Upper limbs Trunk Lower limbs

Calculations for area


Each of the body area scores is multiplied by the area affected.

B1 x (0 to 6)= C1 B2 x (0 to 6)= C2 B3 x (0 to 6)= C3 B4 x (0 to 6)= C4

Total score
The PASI score is C1 + C2 + C3 + C4.

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