Congenital psoriasis without an underlying nevus following the lines o
f Blaschko is described in a B-year-old girl, In addition to this spec
ial type of psoriasis, she suffered from atopic dermatitis. The lesion
s were aggravated by sun exposure and phototherapy treatments, as well
as by upper airways infections, without any clear explanation of thes
e trigger factors. We propose to call this form of psoriasis congenita
l blaschkoid psoriasis.