I have an autoimmune disease - is nipple surgery safe for me? What are the risks? (photos)

Hello, I am interested in shortening the nipple because it is too long and it does not look aesthetically. However, I am concerned that if it is not a risky procedure. I am 40 years old, I am after giving birth and I will probably not have children anymore. I'm just afraid if then in the breast can not arise e.g. inflammation because of surgery, or another health complication. I also suffer from autoimmune diseases. Is this procedure safe for me? Thank you in advance for your answer.