| Score | Category | Criteria: Description | |||
| Erythema | Oedema | Dryness | Vesicles | ||
| 0 | Absent | No erythema | No oedema | No dryness or desquamation | No papulae, vesicles, bullae, pustules |
| 0.5 | Very Slight | Very slight erythema (hardly visible): quite pink colouration of one part of the tested area | Very slight oedema (palpable, hardly visible) | Slight dryness | Papulae, or small vesicles (less than about 1 mm in diameter) |
| 1 | Slight | Slight erythema: quite pink colouration of the complete tested area or rather visible in one part of the tested area | Slight oedema (palpable and visible) | Clear dryness | Vesicles 1 to 2 mm in diameter |
| 2 | Obvious | Clear erythema: well defined erythema covering all of the tested areas | Clear oedema with or without papule(s) or vesicle(s) | Moderate desquamation | Pustules |
| 3 | Severe | Severe erythema covering all of the tested area or erythema diffusing outside the tested area | Severe oedema (extended area outside the tested area) with or without vesicle(s) or blister(s) | Severe desquamation | Bullae with clear liquid |