My grandma has these hard bumps forming on her finger joints near the nails. Why is this spreading?

health and increase susceptibility to osteoarthritis.
6. When Hard Finger Bumps Signal Something More Than Wear and Tear
While Heberden’s nodes are generally a sign of osteoarthritis, it’s important to rule out other potential conditions that could cause similar symptoms. Rheumatoid arthritis, for instance, can also cause nodules on the fingers, but continue reading …