They are not contagious and are generally not dangerous.
They may gradually appear on several fingers as osteoarthritis affects multiple joints.
Although the bony changes themselves usually do not disappear, symptoms such as pain and stiffness can often be managed with appropriate care.
If the bumps appear suddenly, become very painful, grow quickly, or are accompanied by redness, heat, swelling, fever, or other unusual symptoms, it is important to seek medical advice.
Understanding what these bumps represent can make them much less alarming: in many cases, they are simply a visible sign of gradual changes occurring in the finger joints.
