Irritable Bowel Syndrome (IBS) is a common functional digestive disorder characterised by abdominal pain, bloating, and altered bowel habits such as diarrhoea, constipation, or both. Unlike structural gut diseases, IBS involves dysregulation of gut–brain communication, abnormal motility, and heightened intestinal sensitivity. Triggers often include stress, food intolerances, infections, or imbalances in gut bacteria. Although not life-threatening, IBS can significantly impact quality of life, causing fatigue, anxiety, and dietary restrictions. Management focuses on identifying triggers, improving diet, supporting gut microbiome balance, stress reduction, and functional medicine approaches to restore digestive and overall wellbeing.