Hello,
Cortisone shots are sometimes used for treatment of acne but they are not without
side effects.In addition to the systemic
side effects,they can cause flushing of the skin,skin pigmentation and sometimes an allergic reaction to cortisone.You can go in for other treatments like dermabrasion,chemical peels,laser resurfacing,punch grafts etc.
I hope that helps. Please do keep me posted on how you are doing or if you have any additional doubts.Warm regards.