Tophi: Plural of tophus. SLIDESHOW What Is Rheumatoid Arthritis (RA)? Symptoms, Treatment, Diagnosis See Slideshow From Arthritis Resources Tips to Pamper Your JointsKeeping Up With Your RA Through TelemedicineTreatments for Your Rheumatoid Arthritis Featured Centers Good and Bad Foods for PsoriasisVideo: Getting Personal on Life With MS Health Solutions From Our Sponsors Shot-Free MS Treatment Your Child and COVID-19