Almost all patients experience no complications associated with these types of treatments performed by a trained dermatologist. However there is a theoretical risk of increase in pigmentation of your skin if treatment is done too vigorously and/or you do not follow the after-care instructions given by the doctor.
Here’s a list of the conditions that make someone unsuited for Microdermabrasion. However these are not absolute contraindications. So please discuss with your dermatologist.