It is relatively insidious in its onset and is not associated with preceding viral infection. ITP resolves spontaneously only on rare occasions. In ITP, the autoantibodies are directed against platelets. Platelets are minute, disk-shaped components of the blood that are needed for prevention and control of bleeding. Platelets are formed in the bone marrow and are released into the blood.
Platelets have a limited life span before they are replaced by new platelets.
In ITP, the platelets are prematurely destroyed. For more information on ITP or other autoimmune disorders, please click on the request information icon below. It is vital that persons diagnosed with, or suspected of having, an autoimmune disease consult with their physician or with the appropriate division at a major teaching hospital, to assure proper evaluation, treatment and interpretation of information contained on this site.