Abdominal pain The main manifestations of peritonitis are acute abdominal pain, abdominal tenderness, abdominal guarding, rigidity, which are exacerbated by moving the peritoneum, e.g., coughing (forced cough may be used as a test), flexing one's hips, or eliciting the Blumberg sign (meaning that pressing a hand on the abdomen elicits less pain than releasing the hand abruptly, which will aggravate the pain, as the peritoneum snaps back into place). Rigidity is highly specific for diagnosing peritonitis (specificity: 76–100%). The presence of these signs in a person is sometimes referred to as peritonism. The localization of these manifestations depends on whether peritonitis is localized (e.g., appendicitis or diverticulitis before perforation), or generalized to the whole abdomen. In either case, pain typically starts as a generalized abdominal pain (with involvement of poorly localizing visceral innervation of the visceral peritoneal layer), and may become localized later (with involvement of the somatic innervation of the parietal peritoneal layer). Peritonitis is an example of an acute abdomen. Other symptoms * Diffuse abdominal rigidity (abdominal guarding) is often present, especially in generalized peritonitis * Fever * Sinus tachycardia * Development of ileus paralyticus (i.e., intestinal paralysis), which also causes nausea, vomiting and bloating * Reduced or no passage of abdominal gas and bowel sound Complications * Sequestration of fluid and electrolytes, as revealed by decreased central venous pressure, may cause electrolyte disturbances, as well as significant hypovolemia, possibly leading to shock and acute kidney failure. * A peritoneal abscess may form (e.g., above or below the liver, or in the lesser omentum) * Sepsis may develop, so blood cultures should be obtained. * Complicated peritonitis typically involves multiple organs.
complications of Intussusception 
complications of Pyloric stenosis
complications of Hirschsprung's disease
complications of Hiatal hernia
complications of Short bowel syndrome
symptom of Hirschsprung's disease
medical cause of Intestinal pseudo-obstruction
medical cause of Stomach cancer