Typically there are minimal to no side effect. Depending on the individual patient and their medical condition, some side effects might include: relaxed or fatigued sensation with a desire to sleep, increased energy with difficulty falling asleep, occasional mild headache, increased bowel or bladder activity, and pain having moved to a different location. Most of these side effects have to do with changes (improvement) in blood circulation. Always advise Dr. Steve at Staten Island Wellness Care in Staten Island or the staff of any changes or abnormalities you may experience from electromedical treatment.