Rox my husband has an atrophied right hand from CIDP. These are some exercises he does.
Wrist exercises:
Starting position: Sit down. Bend your right elbow and rest your forearm on a flat surface, like a table. Make sure your wrist hangs loosely over the side of the table.
* Wrist bends. Bend your hand back toward your wrist so that your fingers point toward the ceiling. Bend your hand down so that your fingers point toward the floor.
* Wrist rotation. Rock your hand back and forth sideways. Gently rotate (turn) your hand in circles.
Repeat the above exercises with your left arm.
Hand and Finger exercises:
Starting position: Sit or stand. Place your hand out in front of you.
* Finger bends. Make a tight fist. Then open and relax your hand.
* Finger spreads. Open your hand and stretch the fingers as far apart as possible. Bring your fingers together again.
* Finger-to-thumb touches. One at a time, touch each fingertip to pad of the thumb.
* Thumb-to-palm. Move your thumb and rest it across your palm. Move it out to the side again.
Repeat the above exercises with your left hand and fingers.
Good luck. You can find variations of the above on the internet.
Laurel