This study purported to analyze and clarify factors that cause interpersonal stress, conflicts, inferiority complex and dislocation in adolescence. Study I identified three categories of interpersonal stress: (1) interpersonal conflict, (2) interpersonal inferiority complex, and (3) interpersonal dislocation. Study II examined correlations between personality trait scales and these three categories. These correlations were analyzed according to stressfulness and frequency of events. As a result, validity of the three categories was supported, and it was suggested that different strategies were necessary for intervention in order to reduce the impact of stress.