The objective of this research is determines the most frequent basic symptom & the most frequent type of schizophrenia in Ardabil hospitals patients.& providing a new classification of basic symptoms in these patients, so that psychiatrics of Ardabil city can use the results of this study to achieve an accurate & also rapid diagnosis of schizophrenia.

This study is a descriptive – analytic one. A sample of 100 patients of both sexes from 17 up to 40 years old was selected. To study the basic symptoms of schizophrenia in them, we used a 44 item questionnaire which was provided through a combination of PANSS & Kitamura questionnaires. To screen the patients with schizophrenia, we used MMPI test. The findings was analyzed by descriptive statistics & through the computer software SPSS. Also a PCA method of factor analysis was used to the hypotheses.

single (62%=49 patients), unemployed (52%=52), with no education (31%=31), negative family history (91%=91), with frequent admission (47%=47). The most frequent basic symptom in these patients was social withdrawal was at second place. the most frequent type was paranoid schizophrenia (44%=44).

The findings have a concordance with results of the last studies about the basic symptoms of schizophrenia & also with DSM-IV & Bleuler& Kraepelin symptoms all of these systems introduce the different fields of a single diagnostic structure rather than antagonist ones.

Anyway, two important factors that were recognized were cognitive disorder. This study suggests that if we recognized emotional symptoms