Identify a sign of internal bleeding.

Abdominal pain, bruising, or signs of shock are critical indicators of internal bleeding in a patient. When bleeding occurs inside the body, it can lead to several physiological responses. Abdominal pain may arise from the presence of blood in the abdominal cavity or from the stretching of organs. Bruising can indicate that blood vessels have been compromised or that there has been trauma, allowing blood to escape into surrounding tissues.

Additionally, signs of shock, such as confusion, rapid heartbeat, paleness, and weakness, are associated with significant blood loss and reduced oxygen delivery to the body's tissues. Internal bleeding can lead to hypovolemic shock, where a decrease in blood volume causes vital organs to suffer from insufficient blood supply. Detecting these signs early is crucial for prompt medical intervention.