Why does my 10 year old scar hurt?

Why Your Old Scar Might Be Causing Discomfort

The discomfort you’re experiencing could be due to the fact that the nerves in the area were likely damaged alongside the surrounding healthy tissue. As time passes, it’s possible for nerve endings to regenerate, leading to pain in the scar tissue. Additionally, underlying internal conditions may contribute to the discomfort associated with scar tissue over time.