[Disorders associated with autoimmune thrombocytopenic purpura (ATP)].

Idiopathic thrombocytopenic purpura(ITP) was originally defined as a thrombocytopenia without apparent causes. However, it is currently considered as one of the autoimmune diseases, autoimmune thrombocytopenia(ATP) caused by increased platelet destruction by anti-platelet antibodies. ATP is associated with various disorders, including other autoimmune diseases, lymphoproliferative disorders, and infection. However, significance of the association of ATP with these disorders is not clear in some cases. When activity of these disorders is low, standard treatments for ITP are effective for thrombocytopenia. Otherwise, treatments for the primary disorders are necessary.