Is Picosure safe and effective for someone w/ an autoimmune disease, taking meds that has photosensitivity as a side effect?

I have a black tattoo on my lower back which is over ten years old, to which I added another coloured tattoo a few years ago. I like the coloured tattoo but would like to remove the black tattoo. I also take hydroxychloroquine daily which I know can cause photo sensitivity. Is the Picosure laser likely to cause problems with the skin? Would it cause discolouration of the skin where the tattoo is? My GP is unable to give me any advice.

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