R19: Other symptoms and signs involving the digestive system and abdomen

R19.3: Abdominal rigidity

Abdominal rigidity is a medical condition where the muscles in the stomach or abdomen become stiff or hard. This occurrence is typically a reaction to irritation or injury in the organs housed within the abdomen, primarily the stomach, liver, intestines, and other associated structures. The rigidity may be general or localized, depending on the underlying cause. Symptoms commonly associated with abdominal rigidity include abdominal pain or discomfort, bloating, and nausea. In some cases, it can also present with signs hinting at the underlying cause, such as fever in infection or jaundice in liver diseases. The hardness or stiffness of the abdomen can be continuous or fluctuate, and this change can be observed over the progression of the condition. This condition may be indicative of severe underlying processes, such as appendicitis, pancreatitis, peritonitis, or injury to an internal organ, and should therefore be evaluated by a healthcare professional.