I have a marble size lump on the inside left wrist down near my hand. I had left trigger surgery a month ago, and I didnt know if that could be a reason. It is very sore and feels raw and irritated feeling all along the inside of my arm about half way to my elbow.
Hi, This may be a ganglion which is a swelling in one of the tendons at the wrist. It may be irritating a nerve causing the pain. I suggest you see a hand surgeon for assessment and to discuss options which may include surgical removal.  Chat Doctor.