A mallet finger happens when the tendon that straightens the tip of your finger is damaged. This often results in an inability to fully straighten the fingertip.
Do you have pain at the thumb side of your wrist or base of your thumb that makes it difficult to turn your wrist, lift or grasp objects, or make a fist? You might have De Quervain's tenosynovitis, also known as radial styloid tenosynovitis.