TABLE 2. Irritable bowel syndrome (IBS) sub-classifications lBS-diarrhoea (IBS-D) - >25% loose or watery stools; <25% hard or lumpy stools - Morning frequency, often with urgency - Usually accompanied by pain that is often relieved by defaecation IBS-constipation (IBS-C) - >25% hard or lumpy stools; <25% loose or watery stools - Most common in women - Sensation of incomplete evacuation - Associated with the passage of mucus IBS-mixed (IBS-M) - >25% loose or watery stools; >25% hard or lumpy stools - Symptoms alternate between constipation and diarrhoea - Symptoms often involve the passage of hard stools in the morning, followed by increasingly loose or watery stools throughout the day IBS-unclassified (IBS-U) - <25% loose or watery stools; <25% hard or lumpy stools - Insufficient abnormality of stool consistency to meet the criteria for IBS-C or IBS-M #IrritableBowelSyndrome #IBS #Subclassifications #Classes #Diagnosis #Diarrhea