Primary immune thrombocytopenia (PIT) is an autoimmune hematologic disorder in which the immune system attacks the body’s own platelets and may also impair their production. September 29 is World Thrombocytopenia Day, so we interviewed Javier Letellez, a hospital pharmacy specialist at Fuenlabrada Hospital (Madrid), and Miguel Ángel Martín, secretary general of the Spanish Hemophilia Federation (FEDHEMO).