Biofeedback and neurofeedback are typically safe, though temporary side effects like mental fatigue, low-grade headache, or sleeplessness may occur. However, do err on the side of caution when choosing a biofeedback therapist. The brain is incredibly complex and requires proper testing before administering any type of therapy. Failure to do so can cause significant undesired effects and outcomes that can persist long-term until reversed properly. At Neurvana, our BCIA-certified clinicians always use a quantitative EEG to select proper protocols before beginning treatment.