[Application of Roman IIII( criteria in the diagnosis of chronic constipation].

In Rome IIII( diagnostic system, disorders associated with chronic constipation include functional constipation, opioid-induced constipation, irritable bowel syndrome with predominant constipation and functional defecation disorders, each disorder has the relative characteristics of clinical manifestations and underlying pathophysiology. Rome IIII( committee modified the diagnostic criteria based on current research achievements, and recommended to make the diagnosis of functional constipation disorders with minimal laboratory test and with indications for colonoscopy and pathophysiological tests. Understanding the clinical manifestations and pathophysiology of functional constipation disorders are helpful for clinicians to apply the Rome diagnostic criteria and improve the accuracy of diagnosis and treatment for the patients with chronic constipation.