A: If you have any underlying condition that significantly impairs your immune system, it is a good idea to avoid microchanneling. Examples include but are not limited to active radiation or chemotherapy, uncontrolled diabetes, chronic inflammatory skin disease, Accutane in the past 2 years, hemophilia or similar bleeding disorder. Also anyone with stainless steel allergies should not do this treatment. We also discourage treatments for those who are pregnant or nursing.