- Exterior sources of electromagnetic interference could result in the machine to malfunction and have an affect on stimulation. - Tissue response to implanted supplies can manifest. In some instances, the development of reactive tissue within the lead in the epidural Room can lead to delayed onset of spinal twine https://www.theorthopaedicandpainpractice.com/chronic-neck-and-shoulder-pain-relief-strategies-to-reduce-discomfort/