Measuring the extent and severity of lesional signs of atopic dermatitis
EASI combines the severity of the signs of eczema and the extent of skin involvement.4
The EASI scoring system uses a defined process to grade the severity of the signs of eczema (erythema, edema/papulation, excoriation, and lichenification) and the extent to which the patient is affected. The extent of lesions in each body region is evaluated based on the percentage of involvement and is given a value between 0 and 6. Each body region value is then weighted by a corresponding multiplier; lower extremities are weighted more while head and neck are weighted the least.4,5
Each region gets a total region score:
The final EASI score is the sum of all 4 region scores. The composite score, on a scale from 0 to 72, determines the severity of the signs of eczema and the extent to which the patient is affected.4,5,d
An improvement of at least 75% in lesion extent and severity (EASI-75) from baseline is a clinically meaningful change.1
dIn patients <8 years of age, the multipliers for the head and neck are 0.2, the trunk is 0.3, the upper extremities are 0.2, and the lower extremities are 0.3.
In patients ≥8 years of age, the multipliers for the head and neck are 0.1, the trunk is 0.3, the upper extremities are 0.2, and the lower extremities are 0.4.4