MedlinePlus states that hyperactive bowel sounds come from several sources including Crohn's disease, diarrhea, food allergies, gastrointestinal bleeding, infectious enteritis and ulcerative colitis. Serious conditions like blocked blood vessels, mechanical bowel obstruction and paralytic ileus may cause hyperactive bowel sounds, hypoactive bowel sounds and missing bowel sounds. However, sometimes bowel sounds simply indicate that the gastrointestinal tract is working properly.
According to MedlinePlus, blocked blood vessels prevent the intestines from getting proper blood flow, which may lead to hyperactive bowel sounds. Hernias, tumors, adhesions or similar conditions may block the intestines to create a mechanical bowel obstruction, which may also cause hyperactive bowel sounds. Paralytic ileus stems from problems with the nerves and reduces their activity. Blood vessel blockage, bowel blockage, chemical imbalances like hypokalemia, infection, overexpansion of the bowel and trauma may cause reduced nerve activity.
MedlinePlus mentions that most of the conditions that cause hyperactive bowel sounds result in no harm and do not need treatment. However, the serious underlying causes such as blocked blood vessels, mechanical bowel obstruction and paralytic ileus merit a trip to a physician. MedlinePlus also recommends seeing a doctor when experiencing symptoms such as diarrhea, bleeding from the rectum, nonstop constipation, nausea and vomiting.