Hello. I am wondering how long after treatment you looked like this? I also noted that you wrote this 10 days ago, so I would like to know how things have progressed: did you have any blistering? Has the itching resolved? How do they look now? I usually recommend that a Fitzpatrick IV start on hydroquinone, or similar, to inhibit melanogenesis (making dark spots) at least 2 weeks prior to IPL. Then, our office might opt to do a test spot after the two week time frame. If that does not cause a reaction like you had, then we would proceed with treatment. Hyperpigmentation is reversible, and it may take time for these areas to heal completely. I wish you well.
I find that fractional lasers like fraxel and skinfinity with microneedling/prp do very well to help this area once healed. Burns should be treated with growth factors and lightening creams to prevent pigmentation. Best, Dr. Emer