introduction and objective. Psychiatric disorders (and their high rates of prevalence) in primary care have been widely analyzed, but the problem of underdiagnosis remains unresolved. This becomes increasingly more important in rural health centres in the face of lack of epidemiological data from these centres. The aim of this study is focused on the relationship between general health, psychiatric symptomatology and personality characteristics in the context of an adequate diagnosis. materials and methods. 518 primary care patients in 6 Polish urban clinical centres were studied using (in order of administration): a sociodemographic questionnaire, the General Health Questionnaire (GHQ-28) and Eysenck Personality Questionnaire (EPQ-R). results. The investigated sample was representative for urban primary care patients. The findings confirmed a significant association between neuroticism and general health. The strongest relation with current functioning and mental distress of the patients (GHQ general score) was observed in case of symptoms of anxiety and insomnia. The symptoms of depression may be the most difficult to identify (psychiatric symptoms assessed using GHQ sub-scales). conclusions. According to the GHQ assumptions and confirmed by the presented study, sub-threshold psychiatric symptomatology affects the functioning of primary care patients and their general health. This correlates with personality factors. Improving adequacy of diagnosis becomes extremely important, as it may often be the only chance for appropriate therapy of mental problems for people living in rural areas due to lower availability of specialistic mental services. Further epidemiological studies concerning rural primary care and prevalence of the spectrum of mental disorders need to be conducted.