National Psoriasis Foundation Psoriasis Score (NPF-PS)

induration in plaque A

no elevation above normal skin

0

minimal elevation (0.25 mm)

1

mild elevation (0.50 mm)

2

moderate (0.75 mm)

3

marked (1.0 mm)

4

severe (>= 1.25 mm)

5

induration in plaque B

no elevation above normal skin

0

minimal elevation (0.25 mm)

1

mild elevation (0.50 mm)

2

moderate (0.75 mm)

3

marked (1.0 mm)

4

severe (>= 1.25 mm)

5

body surface area

0%

0

1 to 20%

1

21 to 40%

2

41 to 60%

3

61 to 80%

4

81 to 100%

5

physician's global assessment

none (may show residual pigment change)

0

faint

1

mild

2

moderate

3

marked

4

severe

5

patient's global assessment

no psoriasis

0

20% as bad as ever

1

40% as bad as ever

2

60% as bad as ever

3

80% as bad as ever

4

worst that it has ever been

5

patient's assessment of itch

none

0

mild (aware every once in a while, often while relaxing, not noticed if focused on other activities)

1

mild to moderate

2

moderate (often aware of itch, annoying, sometimes disturbs)

3

moderate to severe

4

severe (constant, distressing, interferes with sleep, interferes with activities)

5