Numerous conditions can cause abdominal pain without bleeding. According to MayoClinic.com, it's often difficult to determine the exact location or source of abdominal pain. Structures in one area of the abdomen may cause pain locally or in another area. Some abdominal pain is caused by structures or tissues outside the abdomen. Some types of abdominal pain are characterized by bleeding, while others are not. Bleeding, when it occurs with abdominal pain, may signal a serious underlying condition.
Peritonitis
Peritonitis can cause abdominal pain without bleeding. According to the MedlinePlus website, peritonitis is an inflammation or irritation of the peritoneum. The peritoneum is a thin tissue that covers the inner wall of the abdomen and many of the organs in the abdominal cavity. The most common cause of peritonitis is an accumulation of pus in the abdomen. Pus accumulation in the abdomen is known as an intra-abdominal abscess.
The MedlinePlus website states that common signs and symptoms associated with peritonitis include a painful and tender abdomen, abdominal pain made worse by movement or when the abdomen is touched, abdominal distension or bloating, fever and chills, reduced stool and urine output, extreme fatigue, and nausea and vomiting. According to MedlinePlus, peritonitis can be a life-threatening condition, and it can result in numerous health complications.
Gastritis
Gastritis can cause abdominal pain without bleeding. The National Institute of Diabetes and Digestive and Kidney Diseases states that gastritis is a condition characterized by irritation or inflammation of the stomach mucosa. The mucosa is the inner lining of the stomach. Embedded in the stomach mucosa are cells that produce acid, enzymes and mucus. Inflammation of the stomach lining reduces the amount of acid, enzymes and mucus these cells produce. The most common cause of gastritis is Helicobacter pylori, or H. pylori, infection. Approximately 20 to 50 percent of Americans may be infected with the H. pylori bacteria, according to NIDDK.
Common signs and symptoms associated with gastritis include upper abdominal pain or discomfort, nausea and vomiting. These signs and symptoms are collectively known as dyspepsia.
Intestinal Obstruction
Intestinal obstruction can cause abdominal pain without bleeding. According to the University of Maryland Medical Center, intestinal obstruction is a partial or total blockage of the bowel that limits the passage of intestinal contents. There are two principal causes of intestinal obstruction: mechanical blockage and ileus. A mechanical blockage means that there's something in the intestine that's blocking the movement of intestinal contents. Ileus is a condition in which the bowel itself is dysfunctional.
MayoClinic.com states that possible signs and symptoms associated with intestinal obstruction include cramp-like abdominal pain that comes and goes, nausea, vomiting, diarrhea, inability to defecate, abdominal distension or swelling, abdominal tenderness, and fever. Certain individuals have a greater risk for intestinal obstruction, including people who have had abdominal or pelvic surgery, people with Crohn's disease, and people with a history of constipation.
