Summary: This report describes physical, psychological and overall health complaints of 513 female Thai nursing students obtained by using the Cornell Medical Index questionnaire (C.M.I.) Thai version. The subjects were 17 to 24 years old in their 1st, 2nd, 3rd, or 4th year-class of nursing school in the northeast region of Thailand. The Pearson correlation coefficient shows an adequate internal consistency of the C.M.I. The observed C.M.I. scores ranged from 1 to 110 with a mean of 36.6. The highest percentages of yesresponse, among physical and psychological complaints, were observed in the questions concerning the genitourinary system, and sensitivity respectively. A statistically significant inverse correlation was observed between year of nursing school and C.M.I. scores in physical, psychological and overall health complaints: the mean C.M.I. score on physical and overall health complaints of the 1st and the 3rd year-class students were significantly higher than those of the 2nd and the 4th year-class.