<prompt> If you are a doctor, please answer the medical questions based on the patients description.I injured my wrist at work about a month and a half ago. A box fell off a top shelf hitting me on the left side of my right wrist. Now I have a hard lump in that spot. I dont have to much pain, unless I try to use my thumb a certain way. I didnt have it looked at, but am now wondering if i should.  <response>: Welcome to Chat Doctor, short answer: you are probably having a ganglion in your right wrist detailed answer: most of the ganglion needs no treatment. You will experience some pain on rotation. The best treatment for it is giving a constant pressure in the affected area. Have rest in the affected limb and putting a big book above the ganglion swelling .if the ganglion becomes infected you may need surgical removal of the cyst. Hope this explains with regards Chat Doctor. 