Table 1.
Description of mouse PASI scores.
| Score | 0 | 1 | 2 | 3 | 4 |
|---|---|---|---|---|---|
|
Erythema
(redness) |
Fleshy pink. (Minor cuts appear dark but discreet) |
Minor reddening across surface. | Medium red across surface. | Medium red across surface with dark red patches. | Dark red |
| Induration (thickness) | No skin thickening. Flesh should be loose and unwrinkled |
Visible skin puckering; thickness unchanged when pinched (~1 mm) |
Skin thickness of 1–2 mm when pinched; visible ridges in some areas. |
Skin thickness of >2mm when pinched; visible ridges are loose. |
Skin thickness of >2 mm without pinching; visible ridges are tight. |
| Desquamation (scaling) | No skin flaking. | Minor dry spots without flaking. | Dry spots across a majority of the skin; flaking along crevices |
Moderate flaking across a large surface area. | Moderate flaking across a large surface area; severe flaking along crevices |