[Kintsukuroi.]

Hey there!

I have not had a tattoo on my scars so I can't give you a personal opinion on that. However, I did look into it. It does vary from person to person and your individual pain tolerance. Scar tissue does tend to be more sensitive than undamaged skin so it is possible that you will feel it more. Pain is dependent on the individual person so it may hurt more, it may not but you probably will feel it more because of the scar tissue.

Depending on the severity as well as the size there will be different things that the tattoo artist can and cannot do. Your best bet is to make an appointment with your tattoo artist and let them take a look at the scar and see if it is possible. This is because the scar needs to be fully healed and then they have to look if it's possible to tattoo over it (if it's raised, the size, how deep it is, ect).

I hope this helps! Take care.