Dermatology Online

Psoriasis

Psoriasis Area Severity Index (PASI) Calculator*

*(not validated for use in children and young people)

Head and neck
Erythema (E)
Induration (I)
Desquamation (D)
Sum (E+I+D)
Area
Sum x Area=
Upper limbs
Erythema (E)
Induration (I)
Desquamation (D)
Sum (E+I+D)
Area
Sum x Area=
Tronco
Erythema (E)
Induration (I)
Desquamation (D)
Sum (E+I+D)
Area
Sum x Area=
Lower limbs
Erythema (E)
Induration (I)
Desquamation (D)
Sum (E+I+D)
Area
Sum x Area=
PASI
points

Higher PASI scores indicate higher severity of psoriasis; scores range from 0 (no disease) to 72 (maximal disease severity)