Objective To study the fatigue symptoms of adult patients with primary immune thrombocytopenia(ITP)and to analyze the possible factors that affect the severity of fatigue.Methods Eligible adult patients with ITP who admitted to Institute of Hematology&Blood Diseases Hospital were enrolled in this study and the questionnaires including a Chinese version of the Functional Assessment of Chronic Illness Therapy-Fatigue(FACIT-Fa- Objective To study the fatigue symptoms of adult patients with primary immune thrombocytopenia (ITP) and to analyze the possible causes that affect the severity of fatigue. Methods Eligible adults patients with ITP who admitted to Institute of Hematology & Blood Diseases Hospital were enrolled in this study and the questionnaires including a Chinese version of the Functional Assessment of Chronic Illness Therapy-Fatigue (FACIT-Fa-