ADHD it is a syndrome characterized by the progressive development of excessive hyperactivity, impulsiveness and attentional difficulties. The purpose of our study is to verify the therapeutic effectiveness of repetitive Transcranial Magnetic Stimulation (low frequency (1Hz, 1200 stim/die for five days)), applied on the impending scalp additional motor area, in a subject affected by ADHD. Results show a significant improvement that lasted for at least 4 weeks. Placebo control did not show any improvement.