Applying the pain questionnaire method which included the Korean McGill pain questionnaire, visual analogue scale, personal history of patients and their behavioral aspects, we evaluated the patients whose chief complaints were various pains in out-patient clinic of Rehabilitation Medicine; their characteristics, pain describing words, disease discriminating value of each pain indices, and the relationships among each indices.

82 pain questionnaires were analyzed and the results were as follows.

1) Low back pain and myofascial pain syndrome were the frequent causes and those patients showed relatively high educational level.

2) The relieving factor of pain, the aggravating factor, frequency, and diurnal variation were rather useful for discriminating the causative diseases in the field of Rehabilitation Medicine, but the components of McGill pain questionnaire were not.

3) Each diseases (low back pain, myofascial pain syndrome, ankylosing spondylitis) showed difference in selecting pain describing words.

4) The estimated correlations among sub-components of McGill pain questionnaire were high and the correlation between visual analogue scale and pain rating index was significantly high, which meant that pain rating index represented the intensity of pain, very well.