Alcohol intake measured by phosphatidylethanol in blood and the lifetime drinking history interview are correlated with the extent of psoriasis.

Background: Psoriasis has been reported to be associated with alcohol consumption.

Objective: To investigate the level of alcohol intake in individuals with psoriasis and correlate intake with the extent of disease and pruritus.

Methods: Twenty-nine outpatients (15 females and 14 males) with stable chronic plaque psoriasis of moderate severity were recruited.