Blood Loss

Slow losses (compensated) tend to cause vague symptoms of fatigue and dyspnea. Rapid losses (uncompensated) tend to cause abnormal vital signs and are often visible (e.g. throwing up blood or passing blood per rectum). Internal sources of bleeding (intra-abdominal, retroperitoneal, thoracic) aren't directly visible but hx often suggestive.

Sub-Diseases

Other Diagnoses