Thrombotic thrombocytopenic purpura (TTP) is a rare blood disorder characterized by the formation of small blood clots throughout the body's small blood vessels. This leads to a decrease in the number of platelets, which are essential for blood clotting, resulting in symptoms like bruising, fatigue, and organ damage. TTP can be triggered by various factors, including certain medications, infections, or autoimmune diseases. The condition is often diagnosed through blood tests and requires prompt treatment, typically involving plasma exchange to remove harmful substances from the blood and restore platelet levels.