Warts are another possibility. They are caused by certain types of human papillomavirus and may appear as small, rough growths on the fingers or hands. Warts are generally harmless, although they can spread through contact.
Skin infections can also produce localized swelling. An abscess may cause a painful, warm, red lump, sometimes accompanied by pus or fever.
Because different skin conditions can look alike, avoid squeezing a lump or cutting it open at home. If it becomes increasingly painful, red, hot, or swollen, seek medical advice promptly.
- Arthritis or Changes Around a Finger Joint
A lump near a finger joint may sometimes be associated with arthritis or other changes in the joint.
Osteoarthritis can affect the small joints of the fingers, leading to stiffness, discomfort, and firm enlargements around the affected areas. These changes may develop gradually over time.
Some people also develop a small fluid-filled swelling near the joint closest to a fingernail. This is often called a digital mucous cyst and may be associated with underlying osteoarthritis.
