A hard lump on the top of the hand near the wrist is something many people with RA experience. There are a couple of likely explanations worth knowing about.
One possibility is a rheumatoid nodule — a firm, flesh-colored lump that forms just under the skin. These are the most common skin-related symptom of RA, affecting Show Full Answer
I have those lumps below my thumbs on the wrists, but mine are softer. I believe that's the RA attacking the joints in the wrists. They get warm and, at times, feverish when a flare occurs. I brace my left wrist because it seems to be the worse of the two. Sometimes I brace both wrists, especially to sleep. I have difficulty sleeping with the pain in them. Strange as it may seem, I softly stroke the painful wrist, and it seems to lessen the pain. Maybe it's just lessening my anxiety. But I've cried over my plight with this disease, and I'm not ashamed to admit it. Not that it helps any. 😟