Gottron sign: A scaly, patchy redness over the knuckles seen in patients with dermatomyositis, an inflammatory muscle disorder. (See polymyositis). QUESTION The term arthritis refers to stiffness in the joints. See Answer From Arthritis Resources Inside the Visit With a RheumatologistTaking AS One Day at a TimeWorking With Your Hands With PsA Featured Centers What Are the Best PsA Treatments for You?Understanding Biologics 10 Things People With Depression Wish You Knew Health Solutions From Our Sponsors Shot-Free MS Treatment Your Child and COVID-19