Hyperpigmentation left after lichen planus

I am 22 and was diagnosed with lichen planus 3 years ago. The itchy rash has gone but it has left scars behind which covers my entire back and stomach. I also have a few on my legs, arms and chest. Is there something I can do about it? I did use a prescribed bleaching cream which didn't work that well. My doctor said, there is a chance that this might never go. It's really affecting me! Are there any treatments available for this condition?

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