Skip to Content
Diagnosed with psoriatic arthritis? Learn about biologics >>
Medical Term:


Pronunciation: sō-rī′ă-sis

Definition: A common multifactorial inherited condition characterized by the eruption of circumscribed, discrete and confluent, reddish, silvery-scaled maculopapules; the lesions occur predominantly on the elbows, knees, scalp, and trunk, and microscopically show characteristic parakeratosis and elongation of rete ridges with shortening of epidermal keratinocyte transit time due to decreased cyclic guanosine monophosphate.

[G. psōriasis, fr. psōra, the itch]