Gastrointestinal Complications (PDQ®): Supportive care - Patient Information [NCI] - Diarrhea
Diarrhea is frequent, loose, and watery bowel movements.
Diarrhea is frequent, loose, and watery bowel movements. Acute diarrhea lasts more than 4 days but less than 2 weeks. Symptoms of acute diarrhea may be loose stools and passing more than 3 unformed stools in one day. Diarrhea is chronic (long-term) when it goes on for longer than 2 months.
Purpose of This Summary
This PDQ cancer information summary for health professionals provides comprehensive, peer-reviewed, evidence-based information about treatment of plasma cell neoplasms (including multiple myeloma). It is intended as a resource to inform and assist clinicians who care for cancer patients. It does not provide formal guidelines or recommendations for making health care decisions.
Reviewers and Updates
This summary is reviewed regularly and updated as necessary...
Some chemotherapy drugs cause diarrhea by changing how nutrients are broken down and absorbed in the small intestine. More than half of patients who receive chemotherapy have diarrhea that needs to be treated.
Radiation therapy to the abdomen and pelvis can cause inflammation of the bowel. Patients may have problems digesting food, and have gas, bloating, cramps, and diarrhea. These symptoms may last up to 8 to 12 weeks after treatment or may not happen for months or years. Treatment may include diet changes, medicines, or surgery.
Patients who are having radiation therapy and chemotherapy often have severe diarrhea. Hospital treatment may not be needed. Treatment may be given at an outpatient clinic or with home care. Intravenous (IV) fluids may be given or medicines may be prescribed.
Patients who have a donor bone marrow transplant may develop graft-versus-host disease (GVHD). Stomach and intestinal symptoms of GVHD include nausea and vomiting, severe abdominal pain and cramps, and watery, green diarrhea. Symptoms may show up 1 week to 3 months after the transplant.