Are there side effects associated with neurofeedback training?

For most conditions, there are no adverse side effects due to the training when conducted by a competent professional. If an occasional negative reaction to training does occur it tends to wear off quickly, or it can be trained away by the clinician, or both. Interestingly, our clients often note positive side effects. Someone undergoing training to treat migraines, for example, may report improved sleep, concentration, or mood.