What causes sudden swelling and pain in a single finger?

Aug 22, 2024 Source: Cainiu Health
Disease description:

Playing competitive games for a long time can cause one of your fingers to suddenly swell and hurt. Why does this happen?

Doctor's answer (1)
Dr. Chen Jian

Sudden swelling and pain in a single finger can be caused by various factors.

1. Trauma: Such as impact, sprain, or compression, leading to local tissue damage, edema, and pain. Cold compresses are recommended to reduce swelling, and medical attention is advised if a fracture or deep tissue injury is suspected.

2. Infection: Improper treatment of minor wounds on the finger may allow bacterial entry, causing infection manifested as redness, swelling, warmth, and pain. Paronychia and abscesses are common types of infection.

3. Arthritis: Particularly rheumatoid arthritis or osteoarthritis, which can cause swelling and pain in the finger joints. In such cases, usually more than one joint is involved, although occasionally a single finger may be affected initially.

4. Tendinitis: The tendons in the fingers are surrounded by a tendon sheath. When the sheath becomes inflamed due to overuse or injury, it can cause pain and swelling. This condition is common among individuals whose occupations or activities require frequent use of the fingers.

If symptoms persist or worsen, immediate medical treatment at a hospital is recommended.