Objectives : The studies on variation in diagnosis on the neck and nuchal pain has not been done thoroughly as we can use it in clinical practice of these days. For this reason, I examined the variation in diagnosis mentioned in the classics of Oriental Medicine as the preceding study on standardization of variation in diagnosis on neck and nuchal pain. Methods : I gathered the twenty kinds of classics of Oriental Medicine that were computerized, the textbooks on Oriental Medicine which are being used these days, and the theses on current clinical research. After gathering these data, I analyzed these according to the variation in diagnosis. Results : The classics of Oriental Medicine on the neck and nuchal pain mentioned very much about the neck and nuchal pain occurred by the pathogenic factor of Wind, Cold, and Dampness, disharmony created by deficiency of Liver and Kidney, and pathogenic state of Meridians of Taiyang. According to the texts of these days, the differentiation of syndromes can be divided into four kinds of items such as Wind-Cold pathogen, Wind-Dampness pathogen, Phelgm-Heat, and disharmony between Qi and Blood. The theses of these days rarely mentioned about variation in diagnosis on the neck and nuchal pain. Conclusions : The differentiation of syndromes on the neck and nuchal pain can be divided into four kinds items as affection by exopathogen like Wind, Cold, Dampness, Heat, and so on, stagnation of Qi and the coagulation blood, deficient syndrome of Liver and Kidney, and deficient syndrome of Qi and Blood.