The problem may be long lasting, although symptoms may not get worse over time. The cause of IBS may not be fully understood, but the first sign of IBS is a malfunctioning digestive tract. There may not be any sign of tumors or inflammation in the intestinal tract, however. IBS may be caused by a problem with the signals sent between the brain to the intestines, which may affect how the muscles in the intestines move. Certain foods, stress, hormones and some antibiotics may trigger symptoms in some patients.

Patients with IBS may experience abdominal pain along with diarrhea or constipation. Some patients may experience bloating, mucus in the stool and a feeling that the bowels have not been completely emptied. Patients may experience alternating cycles of constipation and diarrhea, but many patients may experience one more often than the other.

Symptoms may be mild enough that many patients never see a doctor about the disease. Some patients, however, may experience more severe symptoms and may wish to see a doctor.

IBS may be diagnosed by the symptoms of the disorder. A doctor may wish to take a stool sample or a sigmoidoscopy (a procedure that allows a doctor to view the inside of the colon), which allows a doctor to rule out other possible causes of the symptoms.

Many patients may be able to effectively manage their symptoms. Avoiding food that may trigger episodes of diarrhea or constipation, getting adequate exercise and reducing stress may be effective ways of managing symptoms of IBS. Certain medications may help symptoms as well. If these treatments do not work, a doctor may prescribe medication for pain, diarrhea or constipation.

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