I really haven't described this correctly but I wonder if anyone knows why this happens.
I have experienced this for quite a number of years. It usually occurs after I've held on to something. For instance I was just hoovering (not holding onto it hard or anything), put vacuum cleaner away and then felt a sore feeling on one of my fingers, when I looked there is a small 'blown' looking area along one of my veins on my finger, it kind of swells and is painful and itchy. It will probably last for several hours, sometimes a few days then will return to normal.
I often experience this, it can be on any finger and sometimes on the palm of my hand.
What causes this?