Abstract: To analyze the clinical features and therapeutic effects of three patients (two females and one male) with nummular headache（Video EEG excluded headache epilepsy）  combined with chiair type I malformation. Among the patients,   two cases had increased headache when coughing or Valsalva maneuver occurred,   while another patient had no changes in it. None of the three cases were treated with operation. And the headache was relieved completely by oral medication or combined with nerve block for pain region. At present,   there was no recurrence in the followup.

Key words: nummular headache, chiair type Ⅰ malformation, drug treatment, nerve block