What can be the cause of your fingers locking up?

Fingers locking up can be caused by conditions such as trigger finger, where the tendons in the fingers become inflamed and catch in the sheath, leading to difficulty in movement. Arthritis can also contribute to stiffness and locking due to inflammation in the joints. Other potential causes include repetitive strain injuries, tendon injuries, or even neurological conditions that affect muscle control. If this issue persists, it's important to consult a healthcare professional for a proper diagnosis and treatment.