Can scar tissue from open appendix removal ause abdomen pain an if so how can it be treated?

Yes: And the surgery for the scar tissue would be a lysis of adhesions.

Sometimes.: It depends upon where the scar tissue is. If it is on the surface of the abdomen, a scar revision might help. If it is deeper, you might need a general surgeon to look into it for you.

Yes it can: There are a variety of potential causes for pain followi g an open appendix removal due to e extensive scar tissue that has formed and may cause traction on adjacent organs or structures. This tends to be most active for the first 6 weeks after injury typically resolving after that but may persist and be indicative of other problems such as obstruction or keloid formation. Discuss with your surgeo.