| Histological marker |
Score |
| Hyperkeratosis |
1 |
| Acanthosis |
1 |
| Lentigines |
1 |
| Epidermal atrophy |
1 |
| Epidermal hyperpigmentation |
1 |
| Fibroblast hyperplasia |
1 |
| Nodular elastosis |
1 |
| Diffuse elastosis |
1 |
| Ephelides |
1 |
| Lentigines |
1 |
| Telangiectasias |
1 |
| Venous lakes |
1 |
| Purpura |
1 |
| Comedones |
1 |
| Actinic keratoses |
10 |
| Non melanoma skin cancer |
10 |
| Melanoma |
10 |
0 points=no actinic damage, 1-5 points=mild actinic damage, 6-10 points=moderate
actinic damage, ≥ 11 points=severe actinic damage |
