I have had this on and off, more frequent in recent years. Sensation in my left boob like a hot poker being removed, going from top to bottom of my boob.
Usually happens on or around my period probably about 15-20 times a day for about 3 to 4 days. I went to the gp about it a while back and she said nothing to worry about unless it became more frequent, which it hasnt. Its really bothering me today.