Ten young subjects, ranging in age from 12 to 15 years, suffering from tension headache were treated by electromyographic biofeedback (EMG-BFB) twice a week for 12 sessions. The Pain Total Index (PTI) was recorded every month from the beginning to the end of the treatment. At the end of the treatment the PTI decreased significantly in all our patients and, at the same time, the muscular tension values also decreased. This result supports the hypothesis of a correlation between clinical symptom and muscular tension level. We saw our patients for follow-up sessions, and the clinical improvement was confirmed to 1 year from the completion of the treatment; however, the muscular tension values were increased with respect to the last-session values.