I feel for you as I have been living like this for 20 years, you can try and fade them with silicone it's the best treatment, you can but it on eBay pretty cheap, in strips. I have tried fraxel and don't really think its worth the...
Wow is it painful to see others in this situation. I have very similar longer scars on my arm as you from self harming 18 years ago. For years they where raised and itchy. I found silicone strips really helped within days to flatten...