Find the full form of ITP , its meaning in medical and engineering fields, key facts, and answers to common student questions. Immune thrombocytopenia (ITP) is a type of platelet disorder that develops when your blood does not clot as it should because of a low platelet count. When you are injured, platelets (tiny blood cells) stick together to form a plug, called a blood clot, that seals your wound. Autoimmune Thrombocytopenic Purpura: Signs, Causes, and How to Treat Autoimmune Thrombocytopenic Purpura, also known as ITP , is a condition where the immune system mistakenly attacks and destroys platelets, which are cells that help blood to clot. This can lead to a low platelet count and an increased risk of bleeding. The exact cause of ITP is not fully understood, but it is believed to involve a malfunction in the immune system where it mistakenly targets platelets as foreign invaders ... The term ITP stands for Idiopathic Thrombocytopenic Purpura, a disorder that affects the blood’s ability to clot due to a significant reduction in platelet count. This condition can lead to excessive bruising and bleeding, even from minor injuries.