Origins (Embroidery Design) by Origins Software Technologies, Inc.The working file for Origins is an .ASD file extension. When you generate stitches from an image, Origins creates outlines from the image which become the basis for the stitches. These outlines stay with the design in the .ASD working file.
When the tendons which bend the fingers (the flexor tendons) become irritated, they can cause pain, swelling, and stiffness. Tendon swelling interferes with the normal movement of the tendons and can cause the finger to and click, catch (triggering) or lock in position.
Why do the middle fingers lock up when experiencing pain in neck and shoulders?   One cause could be some kind of impingement (pressure or swelling that applies pressure) of the spinal cord at C7, one of the cervical segments of your spine.