Symptoms of trigger finger may progress from mild to severe and include:

Finger stiffness, particularly in the morning.
A popping or clicking sensation as the finger moves.
Tenderness or a bump in the palm at the base of the affected finger.
Finger catching or locking in a bent position, which suddenly pops straight.
Finger locked in a bent position.

Trigger finger can affect any finger, including the thumb. More than one finger may be affected at a time, and both hands might be involved. Triggering is usually worse in the morning.

For all of you too lazy to use a search engine: https://www.mayoclinic.org/diseases-conditions/trigger-finger/symptoms-causes/syc-20365100