Index finger middle joint is painful when curled. joint painful when pressed. no visible swelling. no other symptom. lasted about a week now.

See details: Then see a doctor and have the finger evaluated. You cannot receive a specific answer without a first-hand exam.

Tenosynovitis is a : likely diagnosis, but an actual diagnosis can't be given here. Tenosynovitis can be treated with immobilization (splinting or taping) and ibuprofen taken every day for a week, until the inflammation goes down. Consider a HealthTap Concierge visit if symptoms persist. Seek immediate care if swelling, redness or fever occur, because an infection in this location can get "out of hand" quickly.