Are ttp and itp the same?

No: Both itp and ttp are diseases in which blood platelet counts fall however, itp typically leads to an increased risk for bleeding but ttp results in blood clot formation in small blood vessels. These clots can damage the kidneys or cause stroke. Both diseases can be treated with plasmaphoresis, a procedure in which anti-platelet antibodies can be removed from the blood (a temporary measure).

No: No! both are blood disorders that cause blood clots to form in small blood vessels around the body, and leads to a low platelet count. Itp is an autoimmune condition with multiple causes. Ttp is caused by other causes including cancer, medications, infections, transplants, etc. http://www.ncbi.nlm.nih.gov/pubmedhealth/pmh0001579/.