Irritable bowel syndrome (IBS) is a functional bowel disorder characterized by abdominal pain, discomfort, bloating, and changes in bowel habits without any detectable organic cause. IBS often begins after an infection or stressful life event. It affects 10.5% of people and is more common in women. IBS commonly co-occurs with other functional disorders and psychiatric conditions like anxiety. Early trauma, especially sexual or physical abuse, is linked to higher rates of IBS and other functional disorders. Cognitive biases and altered brain responses to pain and anxiety are also associated with IBS. Treatments like hypnotherapy, CBT and relaxation techniques can provide effective relief, though benefits may not be sustained long-term