Headache is one of the causes of calling many patients to clinics. This
   disease sometime becomes so persecutor that one is not able to perform
   the daily activities. Hence, if the kinds of headache and their causes are
   identified, these people can probably be helped in order to have a
   comfortable life. The aim if this study was determination of headache
   causes in the patients that had referred to Sina hospital in 1998 , with regard
   to headache   specifications and by means of complement tests to confirm
   or refuse the diagnosis.

          After designation a questionnaire, the necessary information was 
   collected by interview and recorded in the question. All of the patients, are
   visited in neurologic ward of Sina hospital. For all of the patients a brain
   CT-Scan and EEG were perform. This study was a descriptive study. 

          The results showed that the most common headache was tension
   headache (33%) and then migraine type. The proportion of female was 37%
   and male was 27%. The mean age of population was 36 years and standard
   deviation was 16 years. Approximately 14% were due to organic causes.
   The most common was hypertension (21%) and then is cervical
   osteoarthrosis (15%).

          In this study , we begun to change headache algorithm by means of
   complement tests to refuse other diagnosis. To consider headache  
   specifications in group of ETC and comparison with the diagnosis type, it is
   possible to help physicians to change and improve the post headache
   approach.