To date, many assessment scales have been developed for the study of emotion dysregulation. Ideal scales used should be reliable and practical, and able to catch the specificity topic considered. This study discusses the rationale underlying the Psychosomatic Dysregulation Inventory (PDI), the methods employed in item selection and scale construction, and describes preliminary results regarding psychometric properties. 100 subjects were administered the PDI and a battery of established self-report measures. The internal consistency of PDII scales ranged from 0.71 to 0.93. The PDI showed good criterion validity, with participants with a clinical diagnosis having a significantly higher corresponding PDI scale score than participants not assigned that diagnosis. Concurrent validity, tested by correlating PDI scale scores with those of relevant, validated measures, was generally good. The PDI appears to be a good psychometrically founded self-report. These results indicate that the PDI may be useful for detecting individuals who are at high risk for psychosomatic dysregulation.