What is VIPIT and how dangerous is it? As the name suggests, VIPIT is a kind of thrombocytopenia, which is the medical term for clotting. A cohort of immunology, medicine and public health experts from Victoria University - Associate Professor Anthony Zulli, Professor Maximilian de Courten, Vasso Apostolpoulos and Maja Husaric - explained the condition like this. "Thrombocytopenia is a condition whereby the numbers of thrombocytes - very small blood particles, or platelets - are markedly reduced," they wrote in an article for "Platelets form clots to stop bleeding, so when you don't have enough platelets in your blood, your body can't form clots. This can lead to excessive bleeding."