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

Osteoarthritis is a chronic condition characterized by the breakdown of cartilage, the flexible tissue that cushions the ends of bones in a joint. When this cartilage deteriorates, the bones begin to rub together, causing pain, swelling, and stiffness.

In response, the body often forms osteophytes, or bone spurs, as a way to try to repair the damage and increase the surface area of the joint. These osteophytes manifest as the hard nodules or bumps on the joints, such as Heberden’s nodes on the DIP joints. This process not only affects the joints’ function but can also lead to visible changes in the hands’ shape.

The appearance of these nodes on multiple fingers is often due to the progressive nature of osteoarthritis. As the disease advances, it can affect more of the joints in the hands, leading to the formation of nodes on several fingers.

Genetic predisposition also plays a significant role in the spread of these nodes. If a person has a family history of osteoarthritis or joint issues, they may be more likely to develop these nodes on multiple fingers. Additionally, repetitive use or stress on the joints from daily activities can exacerbate the condition and contribute to the spread.

Age is one of the most significant risk factors for developing Heberden’s nodes and osteoarthritis. The likelihood of these conditions increases with age, particularly after 45. However, genetics also play a crucial role, as having a family history of osteoarthritis can increase one’s risk.

Gender is another important factor, with women being more prone to developing Heberden’s nodes than men. This is believed to be due to hormonal differences, particularly after menopause, which may affect joint health and increase susceptibility to osteoarthritis.

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 these are typically softer and associated with more systemic symptoms like fatigue and fever.