“…However, a substantiated definition specifically for persons with SPIMD has not been identified [16,17]. The studies that were found used: Rome Diagnostic Criteria [18,19], ICD-10 criteria [20], criteria of the Bristol Stool Scale [21][22][23], criteria of the proposed definition of Veugelers et al [16], signs and symptoms from another reference, or self-composed definitions [17]. However, people with SPIMD are not able to express that they are experiencing some of the criteria and symptoms.…”