I like to play with my laptop on my stomach, but recently I have numbness in my pinky finger and have difficulty moving it, which department should I call?

The position of lying on one’s back is commonly used to bear the pressure of the upper body at the elbow, and combined with the sensation and dysfunction of the ulnar nerve innervation area (including the little finger), it is considered that it may be caused by ulnar nerve compression and should be seen by neurology and orthopedics.