Irritable bowel syndrome affects a lot of people right from late teens to early forties. It is a combination of belly discomfort, pain or trouble with bowel habits. Irritable bowel syndrome could be either more stool or less often than normal. The stools could also be thin, hard or soft and liquid. Those with irritable bowel syndrome find that their daily activities can get affected. The IBS symptoms can be constipation, or diarrhoea, cramps in the lower belly, gas and bloating. Excessive stress can worsen the symptoms. There are no known causes for the condition but there are several reasons for IBS to get triggered. Research suggests that the colon gets hypersensitive and over reacts to mild stimulation. Instead of slow movements, the bowel muscles spasm leading to diarrhoea or constipation. It is also believed that women get IBS more often than men and so many believe that hormones are playing a role. There are no specific tests to diagnose IBS. However, the doctor can order a few tests to rule out food allergies, lactose intolerance, medication, blood pressure drugs and antacids. If the condition is serious, the doctor may suggest colonoscopy to look for blockage or inflammation in the intestines. There is no single treatment that is effective for IBS. The patient may need to make lifestyle changes like better food habits and take medication too. He/she should also find out what the triggers for IBS are and work along with the doctor to figure out a treatment plan.