Olopatadine, a non-sedating H1 antihistamine, decreases the nocturnal scratching without affecting sleep quality in atopic dermatitis

We have demonstrated for the first time that a second-generation antihistamine ameliorates nocturnal scratching behavior in atopic dermatitis patients using a modified wristwatch-type acoustic scratching counting system that we have recently developed. We also analyzed the sleep quality by simultaneous recording of electroencephalogram, and found that sleep quality was unaffected.