What should I consider before undergoing laser skin resurfacing?

I agree with the answers by Dr Winston and Dr Israr. Intralesional injections are mainly recommended for acne cyst. As previously mentioned, frequent steroid injections can caused skin thinning and atrophy and if this happens it may be irreversible! There are many other effective treatments to get the acne under control like oral antibiotics and isotretinoin. So speak to your dermatologist and tell her your concerns and discuss if these other options are suitable for you.

Thank you for your question. It is unfortunate that you have more pigmented spots after the laser treatment. Based on your description, you might have had a Fractional Resurfacing laser like a Fractional CO2. There is a small risk of Post-Inflammatory Hyperpigmentation (PIH) from these procedures. However, most PIH is temporary and would fade in 4-6 weeks. I suggest that you schedule an early appointment for review by your doctor so that he can institute early treatments. There are treatments such as pigmentation creams that should be started earlier rather than later to ensure good outcomes.