| Pathological alteration | Score |
---|---|---|
Corneous layer | Munro abscess | 1.5 |
Hyperkeratosis | 0.5 | |
Parakeratosis | 1.0 | |
Epidermis | Lengthening of rete ridges | 0.5–1.5 |
Lack of granular layer | 1.0 | |
Acantosis | 1.0 | |
Dermis | Lymphocytic infiltrate | 0.5–1.5 |
Papillary papillae congestion | 1.0 | |
Thinning above papillae | 0.5 |