The scar tissue for me is really painful in my right breast. Now don't laugh, but in my situation it gets rock hard and I do to this day get cramping that takes my breath away from the radiation. But with the scar tissue, with any surgery you will have that, just what your body does I guess. But someone in this group mentioned when the scar tissue gets painful and the breast feels hard, use a small vibrator. This breaks up the scar tissue where the skin will not be so hard, plus it takes the pain away for a bit because the tissue isn't so firm. Usually they say to massage it every day in the shower, but for me it was like mini needles and using a small vibrator it helps better and I don't get those needle like pains when massaging by hand, but it still hurts.

I itch now..n surgery will b after 5 more months of chemo

People can get scar tissue anywhere- I have Crohns- so my wonky immune system misidentified my intestines as a bad thing and started attacking it; then it realized it screwed up and tried to fix it by creating scar tissue, once it was satisfied- it stopped, so I would be in remission for awhile, then the process would start up again. Eventually, I ended up with a blockage that required taking out a section of badly scarred intestines. I also don't have full range of motion in my knee because of a buildup of scar tissue from an injury years ago. Scar tissue is just how our bodies try to repair things- sometimes it gets it a bit wrong. If you are feeling tightness, ask your surgeon about an Rx for physical therapy. They can teach you exercises to help stretch that tissue out, which gives you more comfort and possibly more use of your arm. Hugs!