/ Thesaurus / P Synonyms of psoriatic arthritis Find synonyms for: Noun1. psoriatic arthritis, rheumatoid arthritis, atrophic arthritis, rheumatismusage: a form of rheumatoid arthritis usually affecting fingers and toes and associated with psoriasisWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: opulent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language