Painful Scar Tissue After Breast Reduction 6 Years Later, Is this Normal?

It would not be typical for a pain pattern to develop six years postoperatively.  You should see your plastic surgeon to evaluate whether a late hypertrophic scar is at issue.  Also, whenever a patient presents with breast pain, I recommend a breast examination.  If you have not had a screening or regular followup mammogram, then this is always advisable.

It is unusual for a scar six years old to cause pain after a breast reduction. An exam may help delineate the cause. You should probably see a surgeon regarding this.  Good luck.